Meridian Nortel 1 Option 11C Technical Reference Manual page 183

Table 57
Bandwidth Requirements
Talk Slot
320
160
75
40
16
0
Cabinet distribution over a data network
Voice Traffic
(Mbps)
23.5
13.3
7.8
5.6
4.1
0.0
PDV Jitter Buffer
Packet Delay Variation (PDV) jitter buffer is used to smooth out any
variations in the arrival rate of the UDP/IP voice packets with respect to the
rate at which the voice samples are played. The minimum and maximum
values for excellent voice quality are given in Table 56 on page 179.
The PDV jitter buffer is also used to re-sequence out of order voice packets.
Note 1: If you experience buffer underflow errors or clicking and
popping noises on a voice call, the size of the PDV buffer needs to be
increased.
Note 2: Increase the PDV buffer as little as possible (0.5 ms) in order to
keep the round trip delay as short as possible. The goal is to operate with
as small a buffer as possible to keep the round trip delay as short as
possible.
Excessive delay will cause a degradation in voice quality in the form
of echo.
Signaling
Traffic (Mbps)
CAUTION
Option 11C and 11C Mini
Page 183 of 544
0.5
0.5
0.5
0.5
0.5
0.11
Technical Reference Guide
Total
(Mbps)
24.0
13.8
8.3
6.1
4.6
0.11