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Configuration on a CS 1000 system

When configuring the IP Phone 1535 on a CS 1000 system, you must perform the following:

Configure the IP Phone 1535 as SIPN UEXT type on the CS 1000 Call Server. For more information, see SIP Line Fundamentals (NN43001-508).

Configure Proxy type to CS2K in the phone configuration:

Select Main Menu, Settings, VoIP Settings, Proxy, Proxy Type.

Select CS2K

Disable the Network Address Translation (NAT) Timer:

Select Main Menu, Settings, VoIP Settings, Proxy, NAT Timer, Disable.

Disable Stun:

Select Main Menu, Settings,VoIP Settings, Proxy, STUN, Disable.

Limitations

The following limitations exist for an IP Phone 1535 on a CS 1000 system:

Call Transfer with Consultation—The IP Phone 1535 does not support Call Transfer with Consultation.

Ad Hoc Conference (3-way call and so on)—The IP Phone 1535 does not support Ad Hoc Conference on CS 1000.

Video Conference—Video conferencing between Nortel SMC 3456 and IP Phone 1535 is not recommended because Call Hold/Retrieve invocation between these two clients in a video call can cause the IP Phone 1535 to lock up and requires a reboot of the IP Phone 1535.

Nortel Communications Servers

Nortel IP Phone 1535 Installation and Commissioning

NN43160-300 02.03 Standard

Release 4.0/SN10 28 October 2009

Copyright © 2009, Nortel Networks

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Nortel Networks IP Phone 1535 manual Configuration on a CS 1000 system, Limitations