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Troubleshooting
Required software for CS1000E call server in MCS5100 configuration
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.
•Selecting the Korean language for your menu language option causes the IP Phone 1535 to reboot automatically to enable the changes.
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
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:
Nortel Communications Servers
Nortel IP Phone 1535 Installation and Commissioning
Release 4.0/SN10 28 October 2009
Copyright © 2009, Nortel Networks
