Modifying Codec Priority Lists; Nortel Communications Servers; Nortel Ip Phone 1535 Installation And Commissioning; Nn43160-300 02.03 Standard - Nortel IP Phone 1535 Installation And Commissioning Manual

50 Additional configuration using the VoIP Settings menu
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Modifying Codec Priority lists

To set Audio and Video codec priorities (to suit the specifics of your
Communications Server setup), use this configuration option.
Configuring the order of Codec Priority:
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Copyright © 2009, Nortel Networks
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Action
Log in to the IP Phone 1535 using the Admin Mode. For more
information, see "Logging in to the IP Phone 1535 Admin Mode"
(page 25).
From the Main Menu, go to Settings > VoIP Settings >
Registration and select Misc. then press OK to accept selection.
Select CTBW and press OK. The parameters controlling bandwidth
usage are now available. Set the bandwidth parameter to a value
between the range of 60 and 250 Kb/s. By default, the IP Phone
1535 is set with a CTBW value of 250 Kb/s.
Press OK to confirm.
Action
Log in to the IP Phone 1535 using the Admin Mode. For more
information, see "Logging in to the IP Phone 1535 Admin Mode"
(page 25).
From the Main Menu, go to Settings > VoIP Settings > Misc. and
select Codec Priority. Press OK.
Select the Codec Type (Audio or Video) to configured, and press
OK.
Select the priority level, and assign a codec from the list of codecs
available:
a. Audio: The IP Phone 1535 supports the following Audio Codec
Types: G.711 u-law, G.711 a-law, G.723, G.729, AMR, or None.
You can configure these Audio codec types in a priority list of up
to five options. Prioritize codecs depending on your network
configuration.
b. Video: The IP Phone 1535 supports the following Video Codec
Types: H.263 and H.264. You can configure these Video codec

Nortel Communications Servers

Nortel IP Phone 1535 Installation and Commissioning

NN43160-300 02.03 Standard

Release 4.0/SN10 28 October 2009
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