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Limitations 29
Term or context Branch office
SRG 50
Network Class of Service (NCOS)
telephone numbers
(internal, not PSTN)
DN DN
Limitations
The following is a list of limitations for SRG 50 Release 3.0:
•
When an IP Phone is in Local Mode, the SRG 50 does not provide all
the features as those provided by the CS 1000 main office. In Local
Mode, the SRG provides basic features, basic call handling, and basic
routing capabilities only.
•
When an IP Phone is in Local Mode, the SRG 50 does not support IP
Phone Key Expansion Module or Expansion Module for IP Phone 1100
Series.
•
You cannot configure the BUID and MOTN using the IP Phone.
Configure the BUID and MOTN using SRG Element Manager.
•
The SRG and the CS 1000 are configured separately. There is no
single management paradigm or application to update both the CS 1000
and the SRG. Use Element Manager to configure the SRG, and use
standard configuration tools to configure the CS 1000.
•
Virtual Office Login is not supported in Local Mode.
• Language, Volume, and Contrast settings in the SRG are not
synchronized with the CS 1000 settings which causes a potential
mismatch in settings between Normal Mode and Local Mode.
•
Language options available on the CS 1000 may not be available on
the SRG.
•
For the CS 1000 Release 5.0 Alternate Routing for Network Bandwidth
Management feature, the SRG does not support an automatic
redirection of IP trunk calls through the PSTN when such calls are
blocked by the CS 1000 due to bandwidth availability.
•
Multiple ESDN is not supported.
•
VLAN tagging is not supported. However, VLAN tagging is achieved
by using an external router.
•
Active Call Failover is not supported.
•
SIP trunks are used only for voice packet traffic alone. H.323 trunking
is used for main office and Gatekeeper/NRS discovery, polling of WAN
link, as well as voice traffic.
Nortel Communication Server 1000
Main Office Configuration Guide for SRG 50
NN43001-307 02.02 Standard
Release 5.0 3 December 2007
Copyright © 2005-2007, Nortel Networks
.