Required Packages; Fax/Modem Pass Through - Avaya Nortel Communication Server 1000 Manual

Required packages

The IP Phones require the software packages listed in
packages" (page
Table 3
Required packages
Package
M2000 Digital Sets (DSET)
Aries Digital Sets (ARIE)
To configure IP Line in groups five to seven on Option 81C CP PII or CS 1000M
MG, the Fiber Network (FIBN) software package 365 is required.

Fax/Modem pass through

The Fax/Modem pass through feature provides a modem pass through
allowed (MPTA) class of service (CLS) for an analog phone TN. MPTA CLS
dedicates an analog phone TN to a modem or a Fax machine terminal. A
connection that initiates from the dedicated TN, and/or calls that terminate
at the dedicated TN through a Digital Signal Processor (DSP), use a G711
NO VAD codec on the Call Server.
Modem Pass through is a specific configuration of a G.711 VoIP channel that
improves modem performance compared to standard VoIP configuration.
Auto switch to Voice Band Data (VBD) is a feature of the DSP; the DSP
monitors the data stream to distinguish between voice and data calls. The
DSP reconfigures to modem pass through mode when it determines the
call is a modem call.
For modem calls between CS 1000 systems connected by analog and digital
trunks, you must configure MPTA CLS on the Call Server of each CS 1000
system for analog units connected to modems. MPTA CLS configuration is
necessary because the call setup negotiation is not done end to end as it is
for virtual trunks. If the analog unit on one Call Server uses MPTA CLS and
the analog unit on the other Call Server uses modem pass through denied
(MPTD) CLS, the modem call fails.
MPT CLS is supported by the G.711 codec only; MPT CLS includes no other
codecs. The packet interval for G.711 codec is set to 20 msecs in MPT.
The maximum speed supported for modem and fax is 33.6 Kbps. This limit
is imposed by the analog line card.
MPT allows CS 1000 to support the following:
•
•
Copyright © 2003–2008, Nortel Networks
.
25).
modem pass through
Super G3(SG3) fax at V.34(33.6Kbps)
Nortel Communication Server 1000
IP Line Fundamentals
NN43100-500 02.02 Standard
Release 5.5 4 February 2008
Fax/Modem pass through 25
Package number
ATTENTION
Table 3 "Required
88
170