Codecs - Avaya Nortel Communication Server 1000 Manual
Ip line fundamentals
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- Reference (700 pages) ,
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The timer runs on the Voice Gateway Media Cards processors. The card
main processor is polled every 20 seconds. If three pollings are missed,
then the card is reset. This gives the main processor 60 seconds to
respond, covering most normal operating conditions.
A reset reason is logged and saved when a card resets. The reset reason
is displayed as a message during the start up sequence and appears in
the SYSLOG file.
The following are examples of reset reasons:
•
•
•
•
The last reset reason can also be displayed at any time by entering the
CLI command lastResetReason .
Codecs
Codec refers to the voice coding and compression algorithm used by the
DSP on the Voice Gateway Media Card. Different codecs provide different
levels of voice quality and compression properties. The specific codecs and
the order in which they are used are configured on the LTPS and CS 1000.
Table 62 "Supported codecs" (page 193)
on the systems.
Table 62
Supported codecs
Codec
G.711 a-law, G.711 mu-law, NOVAD
G.729A
G.729AB
G.723.1
1
T.38
2
G.711 Clear Channel
Copyright © 2003–2008, Nortel Networks
.
JAN 04 12:17:45 tXA: Info Last Reset Reason: Reboot command issued
Output after card reset using the CLI command cardReboot.
JAN 04 12:17:45 tXA: Info Last Reset Reason: Watchdog Timer Expired
Output after card reset due to watchdog timer expiration.
JAN 04 12:17:45 tXA: Info Last Reset Reason: Manual reset Output
after card reset due to either the faceplate reset button press or a power
cycle to the card.
JAN 04 12:17:45 tXA: Info Last Reset Reason: Unknown Output after
card reset due either the card F/W not supporting the reset reason or a
corruption of the reset reason code.
Payload size
10, 20, and 30 ms
10, 20, 30, 40, and 50 ms
10, 20, 30, 40, and 50 ms
30 ms
supported for fax calls on gateway channels
2
supported for fax calls on gateway channels
Nortel Communication Server 1000
IP Line Fundamentals
NN43100-500 02.02 Standard
Release 5.5 4 February 2008
shows which codecs are supported
Codecs 193
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