Adding An Analog Gateway - Avaya one-X Quick Edition System Administration Manual

If your voice network equipment is capable of full-duplex transmission, select full-duplex
instead of half-duplex transmission. Full-duplex devices enable callers on both ends of the
connection to speak simultaneously.
Delay, jitter, and packet loss in speech delivery all have the potential to degrade the quality
of one-X Quick Edition system. To achieve the best voice quality performance, ensure that
end-to-end delay, jitter, and packet loss on the network are within the following tolerances:
- Packet loss less than 1%
- Jitter less than 20 ms
- End-to-end delay less than 50 ms
- Ping delay less than 100ms
Do not connect a network server PC (for example, a web server, file server, or database
server) or a network printer to the PC port on a telephone.
Avaya one-X Quick Edition devices implement Quality of Service (QoS) at TCP/IP Layer 2
(OSI Reference Model). For details, see
you are experiencing performance degradation with the one-X Quick Edition system due to
the traffic load on your network, consider enabling QoS on the network.
Multicast IP traffic must be permitted on the LAN. The default multicast address used by
the A10/G20 is 224.0.1.75; the rest of the one-X Quick Edition system uses
239.192.228.123. This is a limited-scope address that is not routable over the public
network (Internet).
The one-X Quick Edition system supports IGMP v2. A number of higher-end Layer 2
switches support IGMP snooping by default. If the one-X Quick Edition devices making up
the network cannot communicate with each other, turning off IGMP snooping on the switch
may resolve the problem if the switch requires an IGMP querier to be present on the
network but an IGMP querier is not available.
If any one-X Quick Edition devices are connected to a switch that runs the Spanning Tree
Protocol (STP), configure the one-X Quick Edition switch connections with Portfast (also
known as "spantree start-forwarding" on a Cisco 1900XL). Portfast enables the switch to
go into a forwarding state almost immediately after it is powered on.

Adding an Analog Gateway

Analog Gateway
Each analog gateway has four Foreign Exchange Office (FXO) ports that provide one-X Quick
Edition networks with access to the Public Switched Telephone Network (PSTN) through PSTN
lines managed by your telephone service provider.
Avaya one-X Quick Edition Release 3.1.0 System Administration Guide
Typical Network Configurations
Enabling Priority (QoS) Tagging on page 78. If
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May 2007