One Voice SIP trunking

Transcription

One Voice SIP trunking
Technical Outline for Customers
Issue 1.2, 11 March 2014
BT One. Communications that unify
Overview
BT One
What One Voice SIP trunking is all about …
•
The Proposition
•
The Call Service
•
The Solution
•
The Coverage
2
BT One Voice SIP trunking
The Proposition
One Voice SIP trunking …
•
Connects
your Locations in several Countries via the Global BT Network
•
Provides
a Native SIP Trunk Access to connect your PBX/UC Systems, with optional TDM/H.323 support
•
Protects
your communications
… Through dedicated MPLS VPN connectivity to your sites, disconnected from the Internet and protected against any
foreign access through 3rd party
… Through multiple options to support redundant accesses and redundant systems on your side.
•
•
Integrates both Public PSTN and Private VPN Telephony on the same Accesses
…
With Direct Dial-In access from any national and international origination to your locations; you can keep your existing
phone numbers for your locations or get new ones from BT
…
With Full Access to regular national and international fixed, mobile and satellite voice network services, domestic
inbound call services as well as domestic short code services
…
With Private Telephony among your locations within your own private One Voice global VPN dial plan
Complies
to the Legal & Regulatory Requirements and fulfils e. g. your Rights for
… For Privacy:
Place anonymous calls yourself and control incoming anonymous calls
… For Call Control:
Control calls of your users to specific PSTN number types, like Premium numbers
… For Emergency Calls:
Call any emergency number in your country and always get safely connected to the right local
emergency service responsible for your location
The Call Service
One Integrated Telephony Service
•
One Voice SIP trunking provides Voice and Fax/Data Call Service for Public and Private Telephony
•
The Public Telephony Service is suitable to replace your existing PSTN service. It comprises:
… Inbound Calling to the public phone numbers for your locations (Direct Dial-In) from any national or
international public network origin.
Your phone numbers are number ported to BT, or you get new numbers from BT if desired.
… National Outbound Calling to the Public Telephony Network of the country where your respective
location is situated.
These are calls to destinations in the Fixed and Mobile Networks and to Inbound Service Numbers, as
well as to domestic Short Code Services incl. Emergency Services
… International Outbound Calling to Fixed and Mobile Networks as well as to Inbound Services of the
desired country (as far as callable from abroad), satellite networks and generic international services.
•
The Private Telephony Service makes your internal telephony more effective. It comprises:
… On-Net Calling between your national and international locations within your own private BT Global
VPN dial plan.
The VPN access via SIP trunking complements the TDM-based access variants. Your SIP trunking
locations can be integrated seamlessly into your existing VPN service.
Public and Private Calls can be placed equally via the same lines with very user-friendly Dialling Rules.
The Solution
Your IP PBXs
Central
SIP Trunking
Host Platform
Other BT
Networks
BT Global
Managed Voice
Network
National PSTN
Networks
Local Voice
POP (SBC)
BT MPLS
IP Access
Network
International
PSTN Networks
•
Your IP PBXs are connected to the BT “Global Managed Voice” network which provides the World-wide Voice
Services of BT and connects to the National and International PSTN Networks as well as to other BT networks.
•
Your IP PBXs access our network at Local Voice POPs which contain in the first place a Session Boarder
Controller (SBC = firewall). The IP connectivity is provided by the BT MPLS network.
Internally, the accesses terminate at a Central Host Platform that maps your phone numbers to your access
trunks. It organises the call service in both call directions. This system “talks” SIP to your PBXs.
•
The Coverage
Current Coverage of One Voice SIP trunking
Europe
Netherlands
UK (launch 2014)
Belgium
Germany
France
Turkey
Switzerland
America
United States
Africa
South Africa
Asia Pacific
Australia (launch 2014)
Hong Kong (2014)
Singapore (launch 2014 with restrictions at day 1)
The rollout to further countries is currently being prepared.
Details
BT One
How One Voice SIP trunking works …
•
Building the Access
•
Defining the SIP Trunks
•
Connecting Your Systems
•
Placing PSTN and VPN Calls
•
Bringing it Live
7
Details
BT One
 Building the Access
8
Standard Access via BT IP Connect (BT MPLS)
BT MPLS
with dedicated
VPN for each
customer
Your Site A
Local Voice POP
Handover Points
Your Site B
•
The BT MPLS network is used to provide the connectivity between your sites and the local BT Voice POP that
serves the country where your sites are situated. BT IP Connect is the related BT product. It provides MPLS
networking as a managed service.
•
An MPLS VPN is created within this MPLS network which contains your sites and the BT Voice POP that needs
to be connected. No other customer or any foreign party can access this VPN. Per country, one VPN is created.
•
The access to the MPLS network is realised at the nearest BT MPLS POP where a “provider edge” or “PE”
router is available.
•
At your site, an “customer edge” or “CE” router will be installed that connects to the PE router at the BT MPLS
site. This CE router is the handover point where you connect your systems (at according Ethernet ports).
Resilience Option – Redundant IP Accesses
Local Voice POP
Your Site
All platforms and components of the BT Voice Network and the BT MPLS IP access network are built consequently
in a redundant way, preferably using “High Availability” redundancy with hot-standby failover. In this way we
ensure a very high availability of the network platforms.
In order to improve the resiliency of the solution further, also the access connectivity to the BT MPLS network can
be made redundant. The access for an individual site will then be built resilient with redundant PE/CE routers and
redundant cabling between them.
Resilience Option – Geographically Redundant IP Accesses
Local Voice POP
Your Site
Optionally, the CE routers on your site can be connected to PE routers in different locations as well.
Should one IP access POP fail become entirely unavailable for any reason – damage to the site like fire, loss of
power supply, loss of transmission links – then the operation continues via the access to the secondary IP POP.
Resilience Option – Redundant IP Accesses
Local Voice POP
Own
WAN
Your Site A
Your Site B
In case of several sites, each site can of course have redundant accesses as well
•
This may be independent redundant accesses for each site
•
Or you may connect both sites via an own WAN and use the access of the other site as redundancy
•
Or you combine both options – just as you like!
Resilience Option – PBX Redundancy
Local Voice POP
Within your own infrastructure, you may also want to apply redundancy.
•
An option is that you let the PBX of one site act as a backup PBX for the other site, and vice versa
•
In this case, we configure additional SIP access trunks for each site to the respective backup PBX.
For each site, the primary and backup trunks form a trunk group that jointly serve their related site.
•
For the call service provided to each site it makes no difference whether the calls are exchanged with the
primary or backup PBX.
Resilience Option – Dual Homing
Local Voice POP
Your Site A
Secondary Voice POP
Your Site B
For selected countries, BT operates several Voice POPs. In this case, your systems can be connected to two
independent, geographically separated Voice POPs. This option is usually called Dual Homing.
•
Both your PBX/UC system and the BT SIP trunking host know the paths via both POPs. If one POP fails, simply
choose the path via the secondary POP.
•
For the call service it makes no difference whether the calls travel via the primary or secondary POP.
•
Dual Homing is currently available in: Germany, Netherlands, USA
It is currently being extended to:
Belgium, France, Switzerland
A developing Alternative: Access via BT Ethernet Connect
BT Ethernet
Network
Local Voice
POP
Your Site
•
As an alternative to the MPLS-based IP access, BT is developing the Ethernet-based network services and their
use as access technology for the BT One Voice services. The related IP product is BT Ethernet Connect.
•
In the same way as in case of the MPLS access, BT will provide the connectivity plus an access device to your
site. This access device (NTE) will be the handover point.
•
Similar to the MPLS access, the Ethernet access provides a protected IP connection between your site and the
Voice POP that is not shared with or accessible for any other customer or foreign party.
•
BT Ethernet access for One Voice SIP trunking is possible in: Germany, Netherlands, Belgium, United Kingdom
Details
BT One
• Defining the SIP Trunks
16
SIP Trunks
Location 1
Central
SIP Trunking
Host Platform
Local Voice
POP (SBC)
Location 2
•
SIP Trunks are distinguished logical connections between your PBX system(s) and the BT Voice POP(s).
Each SIP trunk is actually a unique combination of peer addresses on either side (PBX and SBC) which talk to
each other. (Peer address = IP address + UDP/TCP port number used for SIP)
The SIP trunks correspond to the physical access lines (E1, S2M, n × S0) in the TDM world, but without being
bound to a specific copper or fiber line. The physical bandwidth is provided by the IP (MPLS/Ethernet) cloud.
•
Within the BT network, it is actually the Central SIP Trunking Host where the SIP trunks are hosted; the POP
SBC acts as an entry gate at the network border. It prolongs your SIP trunks internally to the Trunking Host.
The Trunking Host is the entity that really talks SIP to your PBXs, and that will organise your calls!
•
The Central SIP Trunking Host needs at least 1 SIP trunk to each of your PBXs.
Profile of a SIP Trunk
On the Central SIP Trunking Host, each SIP trunk is associated with a Profile that defines how the trunking
host needs to work with your PBX system and what the call service needs to look like.
Profile parameters are, for example:
Typical Profile Parameters of a One Voice SIP trunk and the Call Service that it provides
Remote End Point
What is the peer address of your system to which we send the SIP messages? Via which Voice
POP can it be reached, and which alternative POP can eventually be used (Dual Homing)?
Traffic Capacity
What are the traffic limitations of this trunk – specified in in/out/bothway direction, measured
in numbers of parallel call sessions or amount of IP bandwidth by the call sessions?
Location
Which location is associated with this SIP trunk?
What are PSTN and VPN numbers of the location, the user extensions, the default extension?
In which Emergency Area is your location situated – that is: which Police, Ambulance or Fire
Service station needs to get your calls?
Or can we alternatively safely identify the location and all its specific data by the calling phone
number (CLI) that your system sends?
Number Format,
Dial Plan
Does your system exchange public PSTN or private VPN number formats?
Feature Settings
Shall calls to certain number types (like Premium Rate) be blocked?
To which country or numbering plan relate all the PSTN phone numbers (calling, called etc.)
that your system sends and expects? (Is it UK, France, North America, Hong Kong, other?)
Shall CLI Restriction be applied permanently on outgoing/incoming calls?
Shall incoming anonymous calls be rejected?
Groups of SIP Trunks
On a higher level, it is also possible to group several SIP Trunks. This is intended for priority / backup
constructions and for load distribution purposes.
Profile of a Trunk Group
Trunks in the Group
Which individual SIP trunks are combined in this trunk group?
Traffic Capacity
What are the traffic limitations for the whole of the trunk group?
Routing Mode
Shall the traffic be distributed over the individual trunks (Load Distribution), or shall the trunks
be filled in a specific order (Priority Routing)?
Load Distribution
Which share of the traffic shall each trunk receive?
Priority Routing
In which order shall the trunks be used? The next trunk will be chosen when the current one is
either full or currently not usable (trunk down, error from PBX etc.).
Note that these trunk groups are independent of Dual Homing constructions. In case of Dual Homing, the
same individual SIP trunk is replicated via a second Voice POP. These doubled trunks can also be members of
Trunk Groups.
These Trunk Groups can be applied very flexibly, for example for distributing the calls to a cluster of PBX/UC
servers on your side, or for overflowing traffic from a primary server to a secondary/backup server that can
serve the respective locations alternatively.
Details
BT One
 Connecting Your Systems
20
PBX/UC Systems working with One Voice SIP trunking
Features of the One Voice SIP trunking Service
Alcatel
OmniPCX
Avaya
Call Management System (CMS)
Cisco
Cisco Unified Call Manager
Microsoft
Microsoft Lync
Open Communications Server (OCS)
Mitel
3300MX
Siemens
OpenScape, HiPath 8000
Sonus
NBS5200
•
The table above shows a number of examples of PBX types that One Voice SIP trunking supports today.
The list of supported manufacturers and systems will steadily grow further. Major types also undergo a
certification test in the BT test lab.
•
The following slides briefly discuss typical connection scenarios using the examples of Cisco Call Manager and
Microsoft Lync, and show how also H.323- and TDM-based PBX systems can be connected.
Connecting Cisco Unified CallManager (CUCM)
Access
Router
Local Voice
POP
CUCM
Your Cisco Environment
•
Cisco Unified CallManager is a certified IP-PBX/UC system that can be connected via One Voice SIP trunking.
•
You can connect your own CallManager platform via One Voice SIP trunking, or use our BT One Enterprise
Cisco product which equally applies One Voice SIP trunking for the access to public and private telephony
services.
•
CallManager is capable to support SIP-based network connections natively and directly without the need of
additional gateways. The compact Call Manager version “Call Manager Express” is likewise supported.
•
Older releases of Cisco CallManager using H.323 trunks can be connected on a non-standard basis.
For this, the local BT Voice POP will need to be equipped with a H.323/SIP interworking function – see below.
CallManager for Multiple Locations
Voice POP
Country A
Voice POP
Country B
Access
Router
CUCM
Shared CUCM
•
CallManager is a good example of a PBX system that can operated multiple locations as a central PBX. It can
even be used sensibly for serving locations in neighbour countries (when distances and capacities allow this).
•
Such systems usually group the user phones by the locations where they are situated, being aware how much
IP bandwidth is available towards each location, knowing which location-specific dial plans need to be applied,
which SIP trunks can be used to hand over the PSTN calls to the public network, and finally how the identity of
the calling user needs to be turned into a public CLI for the location where the caller or phone is situated.
•
One Voice SIP trunking supports such central PBX constructions. The access will be installed to the site where
the central PBX is situated, and one or several SIP trunks will be configured between the BT Voice POPs of the
involved countries and CallManager.
In a simple approach we configure 1 SIP trunk for each location as if each had its own PBX.
•
One Voice SIP trunks can also be shared by several locations. The preconditions are that the locations are in
the same country and that the location of the caller can be identified uniquely by the CLI that CallManager
transmits. This is mandatory, and it must be ensured also in case of CLI Restriction and Call Forwarding.
Connecting Microsoft Lync
Access
Router
Local Voice
POP
Media
Server
Lync
Your Lync Environment
•
Microsoft Lync is a certified IP-PBX/UC system that can be connected via One Voice SIP trunking.
•
You can connect your own Lync platform via One Voice SIP trunking, or use our BT One Enterprise Lync
product which equally applies One Voice SIP trunking for the access to public and private telephony services.
•
Microsoft Lync is capable to support SIP-based network connections natively. However, please be aware that
Microsoft applies their own, proprietary audio codec RTaudio that is not supported by regular telephony
networks and services. Therefore, the audio streams need to be transcoded from RTaudio to a standard codec
like G.711 or G.729. For this purpose, Microsoft requires the use of a Media Server or alternatively another IPPBX as a gateway towards the telephony network. This is key in Microsofts’ architecture for Lync.
•
A concept discussion can be found here: http://technet.microsoft.com/en-us/library/ff799212(v=ocs.14).aspx
•
Suitable alternative media servers and IP-PBXs can be found here: http://technet.microsoft.com/enus/lync/gg131938.aspx, see: “Qualified IP-PBXs and Gateways”.
Microsofts reference provider for Media Servers is AudioCodes.
Distributed Lync Environments
Voice POP
Country A
Voice POP
Country B
Access
Router
Media
Server
Access
Router
Media
Server
Central
Lync Servers
Call Signalling via Central Servers
Call Media directly to Media Servers
•
Microsoft Lync is designed to provide enterprise UC services in distributed environments, that is, for
companies with many sites and locations in the same country or even worldwide. In such an environment,
many server roles may be centralised, even in one location that serves many countries.
•
Also the Mediation Servers can be shared, but they can be centralised only to a limited extend. These servers
carry the voice media streams that must be exchanged between the user phones and the BT Voice POPs
serving the respective country where these phones are located. It will usually be very ineffective to send the
media streams over a long distance from the phones to a central Media Server in another country or even on
another continent, only to send them straight back towards the BT Voice POP in the originating country!
•
Therefore, the mediation servers are typically decentralised, keeping the path between the phones, the Media
Servers and the local BT POP short. Typically, each country should have at least one own Mediation Server.
•
For this, BT will deliver the access lines, routers and SIP trunks to the locations of the Mediation Servers.
Support of Enterprise SBCs
Local Voice
POP
Access
Router
Enterprise
SBC
PBX/UC Systems
•
In the same way as BT on the network side, you may want to operate an Enterprise SBC that decouples your
PBX/UC infrastructure from any external components and accesses outside your organisation and implements
a well-defined and well-controlled entry gate for the same. This can be required due to security
considerations, but it may also have very practical advantages to hide your infrastructure behind an SBC.
•
One Voice SIP trunking fully supports this approach. In fact, it makes not much difference if the BT Voice POPs
connect directly to a PBX/UC system or if that happens via an intermediate SBC or other SIP gateway.
•
In order to achieve a cost-efficient solution, your Enterprise SBCs will typically be installed in central locations.
BT will then build the accesses to these sites where your SBCs are situated, and hand over all SIP trunks there.
•
A redundancy of the SBCs can easily be integrated into an overall access resilience concept as shown in the
previous chapter. The SIP trunks will then be replicated accordingly for terminating at the set of your SBCs.
The traffic over the redundant SBCs and SIP trunks can be distributed in load sharing or priority mode.
•
Well-known Enterprise SBCs that we have operated successfully with One Voice SIP trunking are, for example:
ACME Packet Net-Net SD, Genband S3 (now Quantix), Cisco Cube, Avaya SIPERA
Connecting H.323 and TDM/ISDN Systems
H.323 IW
Local Voice
POP
H.323
Access
Router
SIP
TDM IW
Access
Router
H.323 PBX
TDM PBX
•
One Voice SIP trunking is a native SIP access product, meaning that it applies the SIP protocol for the control
of VoIP calls.
•
However, there can be situations where you may want to use One Voice SIP trunking with an existing H.323
PBX – like earlier versions of Cisco Call Manager – or with an existing TDM PBXs. A reason can be to introduce
the new access while planning to replace a legacy PBX system at a later date.
•
For such cases, One Voice SIP trunking can provide the necessary interworking to SIP:

VoIP calls using the H.323 protocol are interworked to SIP by the Session Border Controller (SBC) of our Local Voice POP.

TDM (ISDN/analogue) calls will be interworked by the Access Router at your site. For this, a different router model will be
selected that provides the necessary ISDN or analogue interfaces and a SIP/TDM Interworking function.
Details
BT One
 Placing PSTN and VPN Calls
28
Choice of the Number Format between PBX and Network
For each SIP trunk that connects to your PBX/UC systems, we configure which Number Format the exchanged
phone numbers shall have. In the first place, one basic decision is necessary:
Shall the phone numbers exchanged between your PBX and the network be:
•
Public PSTN phone numbers, or
•
Private VPN phone numbers?
What is the difference
•
The standard number format will usually be the PSTN format. The official national dial plan of the country
where your location is situated will be applied, which allows you to dial national and international PSTN
destinations and domestic short codes – including emergency – just like from a normal subscriber line.
Additionally, private VPN phone numbers can be dialled after a special VPN trunk prefix. One Voice SIP
trunking defines a unified trunk prefix for this – in most countries this prefix is “88”.
•
The alternative number format is the Global VPN format. This format is useful when existing TDM-based
Global VPN accesses shall be migrated to SIP trunking. Existing PBX dialling rules and dial plan configurations
can simply be taken over.
The agreed number format must be configured both on the PBX/UC system and in the network on the Central SIP
trunking host. It is then applied to all exchanged phone numbers – ie to called, calling and redirecting numbers.
Dialling Rules – EMEA (NL, BE, FR, CH, UK, DE, TR, SA)
Standard Dialling Rules based on domestic PSTN formats
•
International PSTN call:
„00“ + country code + area/subscriber no.
(00) 44…
•
National PSTN call:
„0“ + area code + subscriber number
(0) 20…
•
Domestic short code call:
Short code without any prefix etc.
112
•
Private Global VPN call
„88“ + private site ID + user extension
(88) 123 4567
Alternative Dialling Rules based on Global VPN formats
•
Private site ID + user extension
123 4567
•
National PSTN call
„00“ + own country code + area/subscriber no.
(00) 31 20 …
•
International PSTN call
„00“ + other country code + area/subscriber no.
(00) 44 20 …
Dialling Rules – North America
Standard Dialling Rules based on domestic PSTN formats
•
(011) 44 …
•
National PSTN call:
(1) 212 …
•
Domestic N11 short code call:
911
•
(88) 123 4567
(New York)
Alternative Dialling Rules based on Global VPN formats
•
Private site ID + user extension
123 4567
•
National PSTN call
„011“ + own country code + area/subscriber no.
(011) 1 212 …
•
International PSTN call
„011“ + other country code + area/subscriber no.
(011) 44 20 …
Dialling Rules – Other Countries
The Dialling Rules for other countries follow the same basic rules:
•
Generally, we apply the default international and national trunk prefixes as defined in that country.
•
Local dialling is not supported – see below for comments on this subject.
•
Short codes and other domestic number types are dialled without any trunk prefix
•
Private VPN numbers are dialled with a special VPN trunk prefix. This is usually the “88”, but especially in
countries where no national trunk prefix is used we need to choose a different code to avoid code conflicts.
Example: Dialling rules for Australia – other international prefix, inbound services in domestic range “1”
•
(0011) 44 …
•
Domestic standard PSTN call:
(0) 29 …
(Sydney)
•
Domestic inbound call:
“1” + service number
1 800 …
(tollfree)
•
Emergency call:
000
•
(88) 123 4567
Example: Dialling rules for Singapore – no national trunk prefix, other VPN prefix
•
„000 “ + country code + area/subscriber no.
•
Domestic standard PSTN call:
Subscriber/service number starting with 3,6,8 or 9 6 …
•
Emergency call:
Short code
999
•
(44) 123 4567
(000) 44 …
Keep it Safe and Simple
Local Dialling
One Voice SIP trunking supports dialling on the national level, but no local dialling. Where users shall have the option to dial locally
for calls within the geographic code area, omitting the area code and eventual trunk prefix, this needs to be supported by the PBX
with according translation rules respectively site dial plans. This is in fact common practice.
•
Many countries allow local dialling, but by far not all countries. The tendency is that countries go away from local dialling.
•
Where this is allowed, the rules where local dialling is allowed and where not are often inconsistent.
The most prominent example is North America, where individual dialling rules are defined for each geographic area.
•
Remark for North America: All national numbers are dialled always with the trunk prefix “1” and area code, including local
calls and 555 calls to local directory enquiries. We do not differentiate dial patterns for local and long-distance calls.
Alternative Trunk Prefixes, Regional Dial Codes for Cross-border Calls
One Voice SIP trunking allows calling all supported national and international services with the standard national and international
trunk prefixes. However, it does not support the use of alternative trunk prefixes for placing calls via alternative phone services
respectively via other carriers. Examples: France, Australia, Singapore
One Voice SIP trunking allows calling all destinations of the national dialling plan. This applies also to overseas areas that have been
mapped into the numbering plan of the main land. However, regional cross-border dialling with special dial codes for destinations in
a neighbour country is not supported. These need to be called with their international dial codes. Example: Singapore.
Global Address Formats, aka “E.164 format”
Some PBX/UC manufacturers prefer the Global Address format (“+” followed by the E.164 country code), or even declare this format
a standard number format for SIP. However, this format does not allow you to formulate domestic codes (like the emergency short
codes “112”, “999” or “911”, or inbound service codes eg in Australia) without additional context attributes to the number, which
are not commonly supported by the manufacturers, yet. In fact, many PBX systems simply do not even support the “+” character.
Therefore, One Voice SIP trunking focuses on the official national number formats. This ensures that all services can be called.
Details
BT One
• Bringing it Live
34
Organisational Issues
Plan & Build
1.
The BTRegional Order Manager will plan with you which access configuration shall be built to each of your
sites (based on BT MPLS and/or Ethernet), and which voice configuration shall be implemented on top of
this. This comprises, which individual PBX systems shall be connected for your locations, which SIP trunks
are needed, and what all the related phone numbers, feature settings etc. shall be.
2.
The BT Access & IP Engineering team will build the access lines, access routers to your site(s).
3.
The BT Voice Engineering team will then configure the SIP trunk and the voice service and test it together
with you. BT provides a “test & turn-up” document that describes the necessary preparations and the test
cases.
The test results will be documented in a test protocol; on completion of the tests it will be signed off and
handed over to you.
4.
When the voice service to your PBX is successfully built, it will be fully activated.
When you want use your One Voice SIP trunking access(es) with your existing PBX phone number(s), and
these are till this moment operated by another operator, then we will now initiate the number porting
process so that your phone numbers are switched over from your previous operator to BT. When this has
happened, you receive all incoming calls to your phone numbers via BT and the new One Voice SIP trunk
accesses.
5.
After that, your new One Voice SIP trunking access is live.
Preparation Issues
Access Configuration
The BT Regional Order Manager will clarify the individual needs with you for:
•
Suitable space to install the access equipment; this should be collocated with your PBX/UC equipment
•
Power supply for the access router equipment.
•
Cabling that needs to be installed for the access lines.
SIP Trunks
The BT Regional Order Manager will clarify with you:
•
The details of your PBX/UC system: which elements for PBX, Media Servers, SBCs etc. need to be connected, which models
(manufacturer, product, software version) do you use.
•
The details for each SIP trunk: IP addresses, UDP/TCP ports for SIP, trunk group and backup/Dual Homing configurations,
phone numbers associated with each trunk, trunk sizes, voice and fax media codecs, number formats, feature settings eg for
CLI Restrictions, specific SIP parameters to be used, etc.
Test & Turn-up
•
When the connectivity between your systems and the BT network is established, the SIP trunks will be configured. The BT
Voice Engineer will have prepared all this by an agreed day.
•
Likewise, the configurations of your systems and their cable connection to the BT access router should be completed by then.
•
For the turn-up and test, your systems will need to be equipped with test phones (also fax, when applicable). These devices
must be able to place and receive calls via the new SIP trunk(s), so that call tests can be carried out with the BT engineer.
•
The turn-up and tests need to be done together with the administrators of your PBX/UC system. For this they need to be
available at an agreed day to support the procedure, both for placing and accepting test calls and for eventually analysing the
test calls and debugging the configuration of your systems.
Reference Information
BT One
What you might want to know in more detail …
•
The Voice POPs
•
The Standards
•
The Features
•
The Dial Codes
•
The National Dial Plans
37
BT One
• The Voice POPs
38
Current Voice POP Assignments
Primary and Secondary POPs for each Country
Country
Primary POP
Secondary POP
Netherlands
Amsterdam
Frankfurt
Belgium
Amsterdam
Frankfurt
Germany
Frankfurt
Amsterdam
France
Paris
Amsterdam
United Kingdom
Paris
Zurich
Switzerland
Zurich
Frankfurt
Turkey
Istanbul
─
America
United States
New Jersey
Chicago
Africa
South Africa
Johannesburg
─
Asia Pacific
Australia
Sydney
Singapore (day 2)
Hong Kong
Singapore
Sydney
Singapore
Singapore
Sydney
Europe
BT One
 The Standards
40
Technology Standards - Signalling
SIP Support of One Voice SIP trunking
Protocol
SIP 2.0
Transports
UDP/IP, TCP/IP
Default is UDP
UDP/TCP Ports
For SIP
UDP
TCP
port 5060
port 5060
The port numbers may be varied
Base Standards
RFC 3261
RFC 3262
RFC 3264
RFC 3311
Session Initiation Protocol
Provisional Responses
Offer/Answer Model with SDP
SIP Update Method
Basic Call Signaling
Feature Standards
RFC 3323
RFC 3325
Privacy
Private Extensions to SIP for
Asserted Identity
Diversion Indication
Transmission of CLI Restriction
Save CLI transmission
RFC 5806
Transmission of the own CLI in case
of Call Forwarding to the PSTN
Technology Standards - Media
Media Support of One Voice SIP trunking
Media Types
Audio incl. DTMF, Fax, Data
Audio Codecs
G.711
(“PCM”)
RTP Payload: 64 kbps
- G.711 A-law in Europe incl. Turkey, Africa, Australia
- G.711 µ-law in USA
G.726-32
(“ADPCM”)
RTP Payload: 32 kbps
G.726 following RFC 3551, not “G.726 AAL”
G.729A
( “CS-ACELP”)
RTP Payload: 8 kbps
G.729 annex A only, not G.729 annex B
DTMF Inband
Digit Information sent as audio tones
DTMF RFC 2833/4733
Digit Information sent as series of RTP event packages
DTMF as SIP INFO
Digit Information sent as SIP INFO messages
Fax/Data
G.711 pass-through
T.38 Fax
Bits are passed through via a G.711 audio connection
T.38 Fax over IP is internally transcoded to Fax via
G.711 pass-through – respectively vice versa
Other
Comfort Noise
Auxiliary Payload Type so that the line does not appear
dead in case of speaker inactivity
DTMF
BT One
 The Features
43
Service Features
Phone Services
PSTN Phone
Numbers
Global VPN
Numbers
PSTN
Regular access to the national public telephony network Calls to
and from the national and international PSTN
Global VPN
Internal VPN telephony between own locations around the globe
Operation of PBX Numbers
Each PBX resp. location gets an own PBX pilot number with an
associated volume of user extensions.
Sharing of PBX Numbers
Locations in the same geographic area can share a PBX pilot
number. Each location gets an own range of user extensions.
Number Types
Locations can have Geographic Numbers or Corporate Numbers
(in countries where the numbering plan knows corporate numbers).
Number Porting
The existing numbers can be kept and ported to BT.
New Number Assignment
Alternatively, BT can assign new numbers to the PBX/location.
Private Location Numbers
Each location gets an own short private dial code equivalent to the
public PBX pilot number of the location.
Integration VPN & PSTN
All users have a public and a private phone number in parallel. Both
have the same individual user extension. Only the leading code for
the location is either the public or the private location number.
Integration with existing
GVPN installations
Locations connected via One Voice SIP trunking can be fully
integrated in existing Global VPN dial plans, no matter how they are
connected directly or indirectly to the global BT network.
Call Features
Direct Dial-In
Inbound calls can be placed directly to PBX user extensions,
without calling an operator or 2-stage dialling.
Direct Dial-Out
PBX user extensions can place outbound calls directly to the
PSTN or to other VPN locations.
CLI Presentation
(CLIP)
Presentation of the calling
user extension
The user extension of a user placing an outbound call is
taken over by the network after authentication.
CLI Restrictions
(CLIR)
Outbound CLI Restriction
The presentation of the own CLI on outbound calls can be
restricted permanently and on demand. The calls are made
anonymous prior to the hand over to the called party.
Inbound CLI Restriction
Inbound calls can be made anonymous prior to the call
handover – individually on request of the caller or
permanently on request of the callee (eg for social services).
Anonymous Call Rejection
Inbound calls can automatically be rejected when desired.
Barring by Number Type
The number ranges of all distinguished number types in the
own country incl. short codes can be barred separately.
Barring of Premium Ranges
Premium number ranges for different purposes (business
services, entertainment, etc) can be barred separately.
Barring of Special Areas
Calls to overseas and special areas can be barred separately.
Emergency Calls Excluded
Emergency numbers are always excluded from OCB.
Direct Dialing
Outgoing Call
Barring (OCB)
BT One
 The Dial Codes
46
Dial Codes
Country-specific Dial Codes
Country
ITU E.164
Country Code
International
Trunk Prefix
National
Trunk Prefix
Escape Code
Global VPN
America
United States
1
011
1
88
Africa
South Africa
27
00
0
88
Europe
Netherlands
31
00
0
88
Belgium
32
00
0
88
France
33
00
0
88
Switzerland
41
00
0
88
United Kingdom
44
00
0
88
Germany
49
00
0
88
Turkey
90
00
0
88
Australia
61
0011
0
88
Singapore
65
000
-
44 *)
Hong Kong
852
001
-
44 *)
Asia Pacific
*) Where there can be regular phone numbers „88…“ we must use a safe alternative code – in HK and SG this is „44“
BT One
 The National Dial Plans
48
United States of America +1
Supported Number Types and Ranges
International
International Numbers
011 <country code> …
Full Support
National
Geographic Subscriber Numbers *)
1 [2-9]
Full Support
Federal Government Services
1 710
Full Support
Toll-free Service Numbers
1 800, 1 8[55, 66, 77, 88]
Full Support
Premium Rate Service Numbers
1 900
Full Support
Directory Enquiry Services **)
1 <area code> 555 xxxx
Selected Numbers:
- 555 1212
Telecommunications Relay Service
711
Full Support
Dig Alert
811
Full Support
Emergency
911
Full Support
Short Codes
All national numbers and short codes shown here refer to caller locations in one of the federal states of the United
States of America. Calls to US dependencies, Canada and the Carribean states that share the North American
Numbering Plan are regarded as international calls, and not all services available there may be callable from the US.
*) Geographic subscriber numbers mean both fixed network and mobile network subscribers.
**) 555 numbers are unified numbers for directory enquiry services. By nature, however, they are local numbers,
and they connect to a local directory service in the caller‘s own area. Similarly as for local subscriber numbers, the
PBX needs to apply the local area code as a prefix to the 555 number for calling the service responsible for the own
area. Alternatively, the user can dial the area code of another city or area for calling the directory service there.
South Africa +27
International
Full Support
National
Geographic Subscriber Numbers
0 [1-5]
Full Support
Mobile Subscriber Numbers
0 7 [1-4, 6, 8, 9], 0 8 [1-4]
Full Support
USAL Subscriber Numbers
0 75, 0 85
Full Support
0 80
Full Support
Shared Cost Service Numbers
0 86 0
Full Support
National Rate Service Numbers
0 86 1
Full Support
0 86 [2, 4-9]
Full Support
VoIP Subscriber Numbers
0 87
Full Support
Mass Calling Service Numbers
0 89
Full Support
Emergency Numbers
10111, 10177, 107
Full Support
Non-Emergency Numbers, incl.
Directory Enquiry Services
10x(xxx)
Full Support
Presidential Hotline
17737
Full Support
Short Codes
Netherlands +31
International
Full Support
National
0 [1-5, 7]
Full Support
0 6[1-5, 8]
Full Support
0 800
Full Support
Personal Assistant Services
0 84, 0 87
Full Support
0 85
Full Support
Corporate Numbers
0 88
Full Support
0 90[0, 6, 9]
Full Support
Emergency Number
112
Full Support
Government Service Numbers
14xx(x)
Full Support
18xx
Full Support
Short Codes
Belgium +32
International
Full Support
National
0 [1-9]
Full Support
0 4[6-9]
Full Support
0 70, 0 800
Full Support
Personal Numbers
0 76
Full Support
National Rate Service Numbers
0 78
Full Support
Corporate Numbers
0 79
Full Support
0 90
Full Support
Emergency and Aid Numbers
100-110, 112
All except 104
(Child Phone, German)
12xx, 13xx, 14xx
Selected Numbers:
- 1207, 1307, 1407
- 1234
- 1212, 1313, 1414
Short Codes
France +33
International
Full Support
National
0 [1-5]
Full Support
0 6, 0 7[5-9]
Full Support
0 80
Full Support
Local Rate Service Numbers
0 81
Full Support
Medium Rate Service Numbers
0 82, 0 884, 0 890
Full Support
Diverse Services Numbers
0 836
Part Support
0 89[1-9]
Full Support
0 9[5-9]
Full Support
Operator Assistance
10
Full Support
Emergency Numbers
15, 17, 18, 112, 114,
115, 119, 116000
Full Support
118xxx
Selected Numbers:
- 118700, 118710, 118712
- 118218, 118318
- 118007, 118008, 118612
Toll-free Short Code Services
30xx, 31xx
Full Support
Value-Add Short Code Services
32xx, 36xx, 39xx
Part Support
Short Codes
Calls to geographic, mobile and VoIP numbers associated with the French Overseas Departments are generally
regarded as international calls, although they can be called like national destinations.
Switzerland +41
International
Full Support
National
0 [2-6], 0 71, 0 81, 0 91
Full Support
Corporate Numbers
0 51, 0 58
Full Support
0 7[5-9]
Full Support
0 800
Full Support
Shared Cost Service Numbers
0 84[0, 2, 4, 8]
Full Support
Voice Mail Access Numbers
0 860
Full Support
VPN Access Numbers
0 869
Full Support
Personal Numbers
0 878
Full Support
0 90[0, 1, 6]
Full Support
Emergency Numbers
112, 117, 118, 143, 144, 147
Full Support
Aid Lines
140, 1414/1415, 145
Full Support
European Social Service Numbers
116xxx
Full Support
Announcement Services
16x
Full Support
18xx
Selected Numbers:
- 1811 (Swisscom)
Directory Enquiry for blind people
1145
Full Support
Short Codes
United Kingdom +44
International
Full Support
National
Non-geographic Numbers
Corporate Numbers
Personal Numbers
Mobile & Wifi Subscriber Numbers
Special Services Numbers
0 [1-2]
0 3[0,3,4,7]
0 55
0 56
0 70
0 7[1-5,7-9]
0 800, 0 808, 0 500
0 84[3-5], 0 87[0-3]
0 9[0, 1, 8]
Full Support
Full Support
Full Support
Full Support
Full Support
Full Support
Support *)
Support *)
Full Support
Short Codes
Operator Assistance
Non-Emergency Police & Health
Emergency Numbers
100, 155, 198
101, 111
112, 999 (identical)
116xxx
118xxx
Time, BT ChargeCard, BT Line Test
BT Customer Service,
BT Text Direct , incl. Emergency
Directory Enquiry for blind people
123, 144, 17070
150, 151, 152, 154
18000, 18001.., 18002..
195
Full Support
Full Support
Full Support
Full Support
Numbers: 118500, 118404,
118060, 118505, 118707
Full Support
Full Support
Full Support
Full Support
*) Full support, except numbers for Internet Dial-UP: 0 8089, 0 8440, 0 8710
Germany +49
International
Full Support
National
Mass Calling Services
0 137, 0 1381
Full Support
0 15, 0 16[0, 2, 3], 0 17
Full Support
Medium Rate Numbers
0 180
Full Support
International VPN and User Groups
0 18[1-9]
Full Support
0 [2-9]
Full Support
0 32
Full Support
Personal Numbers
0 700
Full Support
0 800
Full Support
0 90[1, 3, 5]
Full Support
Local Administration *)
0 <area code> 115
Full Support
Emergency Numbers
110, 112
Full Support
116xxx
Full Support
118xx, 1180xx
Selected Numbers:
- 11869 (BT)
Short Codes
*) 115 numbers are unified service numbers of the local (city) administrations in Germany. By nature, they are local
numbers, and they connect to the administration in the caller‘s own area. Similarly as for local subscriber numbers,
the PBX needs to apply the local area code as a prefix to the 115 number for calls to the administration in the own
city or area. Alternatively, the user can dial the area code of another city/area for calling the administration there.
Australia +61
International
Full Support
National
Satellite Mobile Numbers
(SingTel Optus, Telstra)
0 14 [5,7]
Full Support
0 2[3-9], 0 3[4-9],
0 7[2-7], 0 8[5-9]
Full Support
Digital Mobile Subscriber Numbers
04
Full Support
Local Rate Service Numbers
13
Full Support
180 [0,2]
Full Support
190 [0-2]
Full Support
Emergency Number
000
Full Support
Emergency Number (Text Phones)
106
Full Support
Community Services:
Dial before you dig/Time/Weather
1100, 1194, 1196
Full Support
Directory Enquiry
122, 123
Full Support
VPN Access Numbers
188..
Full Support
Calling Card Service
189..
Full Support
Short Codes
Calls to service numbers starting with „1“ (13, 180, 190) are domestic numbers that are dialled without the leading
„0“ as trunk prefix. They are not E.164 numbers, and therefore they can not be written in international number
format, ie as +61 13, +61 180, and +61 190. They can not be called from abroad.
Singapore +65 (Outbound Only)
International
Full Support
National
VoIP Numbers (Voice over Internet)
3
Full Support
Fixed Network Numbers
6
Full Support
Mobile Network Numbers
8 [1-9], 9 [0-8]
Full Support
SingTel Personal Numbers
7000
Full Support
At day 1 (2014), we will support only and outbound PSTN calls service from customers in Singapore to subscriber
numbers in Singapore and abroad, but no calls to Singaporean short code services, inbound service numbers (tollfree, premium) or any special services. It will also not be possible to operate a Singaporean customer in the BT
network. This is due to some additional regulatory requirements in Singapore that need to be supported by the
network with country-specific solutions.
The Global VPN service will be fully available from day 1.
Hong Kong +852
International
Full Support
National
Fixed Network Subscriber Numbers
2, 3 [1,4-9], 5 [7,8]
Full Support
5 [1-6,9], 6, 9 w/o 900 and 99
Full Support
Personal Numbers (UPT)
8 [1-3]
Full Support
80
Full Support
900
No Support
External Telephony Services
15, 16
Full Support
Calling Card Service
20 [0,7-9], 280880xx
Full Support
Service Operator (SBO) Services
30
Full Support
Operator Services
10[0-7], 12xx, 17xx
Full Support
Directory Enquiry
108x
Full Support
High Volume Inbound Services
18x
Full Support
Time Announcement
185x
Full Support
Emergency Number
992, 999
Full Support
Access Codes
Short Codes
Turkey +90
International
Full Support
National
0 [2-4]
Full Support
0 5[0, 3-5]
Full Support
Satellite Numbers (GlobalStar)
0 592
Full Support
0 800
Full Support
0 850
Full Support
0 888, 0 898, 0 900
Full Support
Local Rate Services *)
444
Full Support
Emergency Numbers
110, 112, 122, 131, 136,
151, 155, 156, 157, 158,
159, 168, 177
Full Support
Non-emergency Public Services
1xx
Supported **)
118xx
Selected Numbers:
- 11811, 11832, 11842
- 11855, 11818, 11820
- 11824, 11810, 11844
- 11880, 11833
Short Codes
Calls to geographic and mobile numbers associated with Northern Cyprus are generally regarded as international calls.
*) 444 numbers are national significant numbers that are dialled without the leading „0“ as trunk prefix.
**) Many services currently get new numbers, and their old short codes are taken out of service.
BT One
Communications that unify
bt.com/globalservices

One Voice SIP trunking

Transcription

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