Avaya Nortel Communication Server 1000 Manual page 29

Capacity
The Virtual TN (VTN) feature allows each Voice Gateway Media Card to
support more IP Phones than there are physical bearer channels. There
are 24 bearer channels on each ITG-P card and 32 channels on each
Media Card.
Both cards support a 4:1 concentration of registered IP Phones (IP Phone
2001, IP Phone 2002, IP Phone 2004, IP Phone 2007, IP Audio Conference
Phone 2033, IP Softphone 2050, Mobile Voice Client [MVC] 2050, IP Phone
1110, IP Phone 1120E, IP Phone 1140E, IP Phone 1150E, IP Phone 1210,
IP Phone 1220, IP Phone 1230, WLAN Handset 2210, WLAN Handset
2211, WLAN Handset 2212, WLAN Handset 6120, WLAN Handset 6140 to
gateway channels. The ITG-P supports 96 registered IP Phones. The Media
Cards supports 128 registered IP Phones (when the card has 32 channels).
The IP Phones require the services of the bearer channels only when
they are busy on a call that requires a Time Division Multiplexing (TDM)
circuit such as an IP Phone-to-digital telephone/trunk/voice mail/conference.
When an IP Phone is idle or there is an IP-to-IP call, no gateway channel
is required.
When the total number of IP Phones that are registered or are attempting
to register reaches the limit (96 on the ITG-P or 128 on the Media Cards),
the Voice Gateway Media Card recognizes this, and no more IP Phones
are assigned to the card. Each Voice Gateway Media Card is restricted to
a total of 1200 call attempts per hour distributed across all the IP Phones
associated with the card.
Voice Gateway Media Card controls, indicators, and connectors
The following sections show the faceplates and describe the faceplate
components of the following Media Cards:
•
•
•
Copyright © 2003–2008, Nortel Networks
.
CAUTION
Do not connect maintenance terminals to both the faceplate and
the I/O panel serial maintenance port connections at the same
time.
Figure 2 "Media Card 32-port " (page 30)
Figure 3 "ITG-P 24-port card faceplate" (page 32)
Figure 5 "Media Card 32S card faceplate" (page 38)
Nortel Communication Server 1000
IP Line Fundamentals
NN43100-500 02.02 Standard
Release 5.5 4 February 2008
Voice Gateway Media Cards 29