Codecs, Jitter buffer, Rtp and rtcp – Nortel Networks MOG6xx User Manual
Page 57: Ip phone 2004 mapping, Feature and key assignment
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WLAN Handsets 2210/2211 configuration
Codecs
The WLAN Handsets 2210/2211 are compatible with the G.711 and G.729a/ab codecs. No
configuration is required on the wireless handsets.
If the WLAN Handsets 2210/2211 are registered to the same BCM as IP Phone 200x sets, then the
system administrator must configure only the subset of codecs that is supported by both the
WLAN Handsets 2210/2211 and the IP Phone 200x sets.
If it is necessary for the IP Phone 200x to use a codec that is not supported on the WLAN Handsets
2210/2211 (for example, G.723.1), the wireless handsets must be configured on their own separate
node.
Jitter buffer
The WLAN Handsets 2210/2211 do not support a configurable jitter buffer. If they receive the
Jitter Buffer Configuration
UNIStim message, the command is ignored. Any
adjustment to the jitter buffer setting has no effect on the handsets.
RTP and RTCP
The WLAN Handsets 2210/2211 do not support RTCP. If RTCP packets are sent to the phone
(these are actually sent to the WLAN IP Telephony Manager 2245), they are discarded. When the
handsets are queried for their RTCP statistics, the handsets respond with 0 for jitter, 0 for latency
and 0 for packet loss.
IP Phone 2004 mapping
The WLAN Handsets 2210/2211 emulate the IP Phone 2004. All IP Phone 2004 functions and
messaging features are supported, where possible. The speakerphone function and functions that
require use of the volume keys are not supported. See
on page 75 for more
information on the limitations of the WLAN Handsets 2210/2211.
The large screen area of the IP Phone 2004 and its numerous keys are mapped onto the smaller
screen and fewer buttons of the wireless handsets. The button mapping from the IP Phone 2004 to
the WLAN Handsets 2210/2211 is designed to preserve nearly all of the functionality of the IP
Phone 2004 within a small, mobile device.
Feature and key assignment
The line keys of the IP Phone 2004 are numbered 1, 2, 3, 4, 5, and 6, and are situated to the left and
right of the display screen (see
). These IP Phone 2004 line keys are mapped to
the LINE button on the WLAN Handsets 2210/2211 (see
).