Nortel Networks 1535 - Manual (Page 55)

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Troubleshooting
Required software for CS1000E call server
If your MCS 5100 resides on the same network as a CS1000E, make sure
your CS1000E has the following patches installed:
• MPLR22491
• MPLR22494
Known issues
• Successful NAT/Firewall traversal requires an RTP Media Portal (same
as MMPC client).
• If the IP Phone 1535 is installed within an IP Telephony environment in
which the G.723.1 codec is not supported by all endpoint devices (on
the same node), the IP Phone 1535 G.723.1 codec must be set as the
lowest priority (default setting) to avoid codec negotiation related issues.
Basic troubleshooting
Check physical connections on the IP Phone 1535:
• For power related failures ensure that the power supply is connected, as
IP Phone 1535 does not support PoE.
• For issues of connectivity loss, check all installed cabling for the IP
Phone 1535: are all cables installed firmly and in the correct ports?
• If the handset has no audio, check to see if the handset accidentally
connected to PSTN RJ-11 connector?
Troubleshooting connectivity issues
The following illustrates the icons used by the IP Phone 1535 in describing
the various network connection states encountered during operation and
installation:
Multimedia Communications Server 5100
IP Phone 1535 Installation and Configuration
NN43160-103 01.02 Standard
Release 3.5 20 November 2006
Copyright © 2006, Nortel Networks Nortel Networks Confidential
.