Nortel Networks NN43001-314 - Manual (Page 38)

38 Overview
(500/2500-type) or digital telephone or the PSTN uses one DSP port. Calls
between two IP Phones do not require any DSP ports, as there is no need
for IP-to-circuit-switched transcoding.
Media Cards provide echo cancellation, compression, and decompression
of voice streams.For more information about DSP resources residing on the
MGC that are configured with DSP Daughterboards, see the CS 1000E
Installation and Configuration NTP.
The ITG-P card uses two card slots in the MG 1000B Core, whereas the
Media Card uses one card slot.
Analog or digital trunk cards
All analog and digital trunk interfaces supported on CS 1000 systems are
also supported by the Branch Office feature. Analog and digital trunk cards
interface with the PSTN. For information on trunk cards, refer to Circuit Card
Reference(NN43001-311).
Analog or digital line cards
Analog (500/2500-type) or digital telephones and devices are supported by
the Branch Office feature. For information about line cards, refer to Circuit
Card Reference(NN43001-311).
When additional digital and analog (500/2500-type) telephones are located
in the Branch Office, additional DSP resources are required. Refer to
"Media Card DSP capacity" (page 47) .
Lineside cards
MG 1000B supports the following lineside cards:
• NTD514 line side T1
• NTD534 line side E1
For further information about T1/E1 lineside cards, refer to Circuit Card
Reference(NN43001-311).
MG 1000B with MGC Data Networking
MG 1000B with MGC shelves communicates with the Call Server using
the built-in 100BaseT Ethernet Interface on the MGC. Three Ethernet
ports on the MGC can be used to connect to the ELAN, two for use by
the dual-homing feature and one for a direct connection to a Call Server
platform.
Nortel Communication Server 1000
Branch Office Installation and Commissioning
NN43001-314 01.02 Standard
Release 5.0 20 June 2007
Copyright © 2007, Nortel Networks
.