FAQs SmartNode 4520 Series: Frequently Asked Questions

FAQs
SmartNode 4520 Series: Frequently Asked Questions
Product Model
SmartNode 4520 Series and 4110 Series
Product Name
ToIP - Telephony over IP Gateway-Router and Gateway only
Status
1-July-04, SmartWare Release 3.10
Frequently Asked Questions
What is the SmartNode 4520 Series?
The SmartNode 4520 series are fully featured IP QoS and VPN Routers with integrated POTS
VoIP Gateways. The products offer 2, 4, 6 or 8 FXS and 2 or 4 FXO ports (model dependent)
and dual 10/100 Ethernet. They support the standard VoIP protocols H.323 and SIP (MGCP is
planned).
The combination of router and media-gateway allows customers to connect their telephony
(Phones, Faxes, PBX's) and LAN (PCs etc.) equipment over a single IP WAN (Internet, VPN)
with maximum service quality.
This combination of advanced IP QoS and state of the art VoIP is usually found only in much
bigger and more expensive equipment or requires the combination of several boxes (VoIP
gateway, access router, VPN-box).
What is the SmartNode 4110 Series?
The SmartNode 4110 series are pure analog VoIP Media –Gateways. They offer 2, 4, 6 or 8
FXS or FXO ports (model dependent) and a single 10/100 Ethernet port and support the
standard VoIP protocols H.323 or SIP (MGCP is planned).
The SmartNodes 4110 Series are customer premise endpoints used as POTS-to-VoIP Media
Gateways or POTS over IP/Ethernet extenders. This allows customers to integrate their analog
telephony equipment (POTS terminals, faxes, PBX's , etc) into VoIP networks, they can realize
FXS extensions over Ethernet and toll bypass over an IP WAN.
As opposed to the 4520 Series the 4110 do not have integrated routing and traffic
management functions. They can therefore be used as cost-effective complements to already
installed IP router networks.
What is the difference between the SN4110 and SN4520 Series?
The SN4110 Series are pure VoIP Media Gateways with a single Ethernet port,
meaning that they convert Telephone lines to IP/Ethernet using standard protocols such as SIP
and H.323. The transport of the IP stream to the remote destination is handled by the
LAN/WAN IP network. The SN4110 Series has no control over the reliability of this transport.
The SN4520 Series has two Ethernet ports and includes besides the VoIP Media Gateway
also a fully featured IP router with IP Quality of Service Features. The SN4520 Series can
therefore control the delivery of data traffic routed through the SmartNode and can improve
the service quality of VoIP significantly.
Page 1 of 5
FAQs
SmartNode 4520 Series: Frequently Asked Questions
What is the primary application for the SN4520 and SN4110 Series?
The typical applications for the SmartNode 4520 Series are remote-office, home-office and
branch-office networking as well as voice-data broadband carrier access. Customers are
companies with multiple national and international locations and a demand for home-office
connectivity as well as System Integrators serving these companies.
On the service provider side, ISP's and CLECS providing broadband access (DSL, Cable, Fibre,
WLL) use the SN4520 Series to provide combined telephony and data services to their
subscribers.
What are the ports available on the SN4520/SN4110 Series?
All SmartNode SN4520 come with the following ports:
Port
Ethernet Ports
Console Port
Description
Two (2) 10Base-T / 100Base-TX (Auto-sensing) with support
for full/half duplex operation. Automatic MDI-X recognition
for switch/hub or host connections. Shielded RJ-45,
An RJ-45 (EIA-561) jack supporting RS-232, VT-100 CLI
terminal sessions. (RJ-45 cable and EIA-561 to DB9 adapter
is included with each product)
Depending on the model the following Telephony ports are provided. The same Telephony port
combinations are available with the SN4110 Series.
Model
SN4522/JS/UI
SN4524/JS/UI
SN4526/JS/EUI
SN4528/JS/EUI
SN4522/JO/EUI
SN4524/JO/EUI
SN4524/2JS2JO/EUI
SN4526/4JS2JO/EUI
SN4528/4JS4JO/EUI
Telephony Ports
2
4
6
8
2
4
2
4
4
x
x
x
x
x
x
x
x
x
DSP VoIP Channels
2-wire FXS ports
2-wire FXS ports
2-wire FXS ports
2-wire FXS ports
2-wire FXO ports
2-wire FXO ports
FXS and 2 x FXO ports
FXS and 2 x FXO ports
FXS and 4 x FXO ports
2
4
6
8
2
4
4
6
8
What are the bandwidth requirements for VoIP connections?
The IP network bandwidth required per call depends on the voice compression CODEC and the
voice sample length. The following table shows some possible configurations and the resulting
bandwidth requirements.
G.711
G.711
G.723.1 G.723.1
G.729
G.726@
@6.3
@6.3
32
Sample length [ms]
10
30
30
60
20
20
Payload [Byte]
80
240
24
48
20
80
Total Packet Length
120
280
64
88
60
120
[Byte]
Total IP BW per call
96
75
17
12
24
48
[kbit/s]
Page 2 of 5
FAQs
SmartNode 4520 Series: Frequently Asked Questions
Notes:
1. The IP Bandwidth does not include the Ethernet overhead which must be taken into
account when measuring the bandwidth on LAN segments.
2. The indicated IP Bandwidth is for a single direction of a call. On LAN segments both
directions are measured at the same time.
3. Enabling Silence Suppression will reduce the average bandwidth for a large number of
simultaneous calls by approximately 50%.
Can the SN4000 Series be used for Fax connections?
Yes. The SN4000 Series support both Fax-Bypass using G.711 uncompressed calls with
automatic Codec fallback and special Fax dejitter settings and T.38 Fax-Relay with UDP
redundancy. Fax Gr3 Terminals can be connected directly to an FXS port on the SmartNode.
Note that Fax over IP is very sensitive to packet loss in the network and carefull use of the
SmartNode QoS features can significantly improve Fax performance and reliability.
What is the difference between FXS and FXO?
There is a Tech Note available on the Patton Website which describes this in detail.
In short:
FXS 2-wire POTS interface as provided by the network (jack in the wall)
FXO 2-wire POTS interface where you plug in the line (jack on the phone)
An FXS port always connects to FXO and vice versa.
Are all SmartNode products compatible with SN4520/4110 Series?
Yes, the SN4520 Series is completely compatible with the SmartNode 1000 and 2000 Series
products.
Will the SN4520/4110 Series Operate with Third Party VoIP equipment?
Yes. The SmartNode supports standard VoIP protocols like H.323 and SIP and standard voice
CODECs such as G.711, G.723 etc. To establish a VoIP connection, there must be a standard
compliant equipment (gateway, IP-Phone, other SmartNode) on each end.
The SN4520 Series can be used with the following options on the other end of the VoIP
connection:
1. Another SmartNode with analog or ISDN Telephony ports
2. A third party standard compliant VoIP System (Call Control Server, Terminals)
3. A third party standard compliant VoIP Gateway
Interoperability has been tested with various products and is generally not a big issue. Refer
to the current SmartNode Interoperability list for details.
Patton has a number of system partners with which interoperability has been tested and is
recommended. Patton Global Solutions can provide additional contact information.
Does the SN4520 Series support Network Address Translation (NAT)?
Yes, they support NAT and Network Address Port Translation (NAPT). Supported NAT variants
are static NAT, PAT Overload 1 and 2 and static PAT.
Note that NAT is a feature that only makes sence with packet forwarding between two
networks. It is therefore not available on the SN4110 Series.
Page 3 of 5
FAQs
SmartNode 4520 Series: Frequently Asked Questions
Does the SN4000 Series support PPPoE?
Yes, the SN4000 Series supports PPPoE as the most widely used DSL link layer protocol for
user authentication:
• PPPoE (RFC 2516) Client for autonomous network connection. Eliminates the
requirement of installing client software on a local PC and allows sharing of the
connection across a LAN.
• User configurable PAP (RFC 1661) or CHAP (RFC 1994) authentication.
Which IP protocols and services does the SN4520 Series support?
They provide a variety of IP and Routing Services such as:
Complete internetworking with IP (RFC 741), TCP (RFC 793), UDP (RFC 768), ICMP (RFC 950), ARP (RFC
826).
• IP Router with RIP (RFC 1058), RIPv2 (RFC 2453)
• Integrated DHCP Server and Client (RFC 2131)
• NAT (RFC 3022) with Network Address Port Translation (NAPT), static NAT, PAT
Overload 1 and 2 and static PAT
• Access Control Lists with permit and deny rules for source and destination address,
port, protocols, TOS and DiffServ labels
• Built-in Ping and Traceroute facilities
Does the SN4000 Series support Quality of Service?
Yes, both the SN4520 and the SN4110 Series provide extensive IP QoS support. QoS Features
can be divided in two classes:
1. Packet classification and labeling to mark packets according to ACL, TOS, DiffServ,
802.1p/Q
2. Traffic scheduling/management to control packet delivery using WFQ, Priority and flowsplit schedulers, shaping and policing using dual leaky-buckets
Classification and labeling can be performed by both the SN4520 and SN4110 Series. Traffic
scheduling however is connected to packet forwarding and is therefore only upported by the
SN4520 Series.
Does the SN4000 Series support VLAN?
Yes. The SmartNode supports tagged VLAN (802.1Q) Ethernet frames and normal un-tagged
frames and a mix of tagged and un-tagged frames. The SmartNode can be configured to
participate in one single VLAN.
Does the SN4520 Series support Ethernet switching and bridging?
No, in the current software release the SN4520 Series operates as an IP router. In future
SmartWare releases the two Ethernet ports will be configurable to work in routing, switching
or bridging mode.
How is the SN4000 Series configured?
The SN4520 Series can be configured using several methods:
Page 4 of 5
FAQs
SmartNode 4520 Series: Frequently Asked Questions
•
•
•
•
•
•
Web based Graphical User Interface (Sept 04)
Local/Remote CLI (VT-100 or Telnet)
On-line CLI fully featured and documented
Off-line configuration file editing
TFTP configuration up- and down-load
SNMPv1 (RFC 1157) MIB II (RFC 1213)
Does the SN4000 Series support software upgrades?
Yes, these models supports software upgrades via TFTP. Patton-Inalp publishes current as
well as Beta software on the support pages of our web sites.
Downloads are available under support at http://www.inalp.com/ or under Technical Services on
the Patton website, http://www.patton.com/.
Does the SN4000 Series support SNMP management?
Yes, the SNMPv1 (RFC1157) agent provides get/set access to standard MIB II and enterprise
MIB objects. SNMP can be used for trap collection and statistics but not for full product
configuration.
The enterprise MIBs follow ASN.1 coding format and can be compiled into any third party
management platform that supports enterprise MIBs.
What are the power supply options for the SN4000 Series?
The SN4520 Series has an internal or external UI (100-240VAC) power supply depending on
the model.
DC power supplies (36 to 60 VDC) are available upon request.
Notes:
1. Country specific power cords are ordered separately.
2. The internal power supply (../UI models) uses the 2-pronged power cord. This power
cord is identified with a -2 appended to the standard Patton power cord part number.
For Example: a standard three pronged (IEC320) Euro Power cord would have the
catalog number of 0805EUR. The NEW 2-pronged power cord is an 0805EUR-2.
3. External power supplies (../EUI models) use the standard IEC320 style power cord.
What Certifications/Approvals does the SN4000 Series have?
Safety
Emissions
Telecommunications
CE Compliant
EN60950
CB Scheme
CE Compliant
FCC Part 15, Class A
EN55022, EN55024
CE Compliant
FCC Part 68 (FXO)
RTTE 99/5/EC (FXO)
Canadian CS-03 (FXO)
Page 5 of 5