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Sonus CDR Codec Type Descriptions

This document describes codec information from Sonus CDR. It explains that codec types have three subfields separated by colons indicating: 1) network type (C for circuit, P for packet), 2) codec type as a 2-digit number, and 3) audio encoding type as a single digit number. Specific encoding types are defined for common codecs like G711, G723, G726, ILBC, and G722.

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225 views2 pages

Sonus CDR Codec Type Descriptions

This document describes codec information from Sonus CDR. It explains that codec types have three subfields separated by colons indicating: 1) network type (C for circuit, P for packet), 2) codec type as a 2-digit number, and 3) audio encoding type as a single digit number. Specific encoding types are defined for common codecs like G711, G723, G726, ILBC, and G722.

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Codec Information From Sonus CDR

Codec Type Descriptions


There are three sub-fields in the Ingress and Egress Codec Type fields. A
colon character (":") separates sub-field 1 from sub-field 2 and sub-field 2
from sub-field 3.

Sub-Field 1: Network Type (one character):


C - Circuit Network
P - Packet Network

Sub-Field 2: Codec Type (two numeric digits):


0 - PKT_ENCODING_NULL
1 - PKT_ENCODING_G711
2 - PKT_ENCODING_G711_SILENCE_SUPPRESS
3 - PKT_ENCODING_G723
4 - PKT_ENCODING_G729A
5 - PKT_ENCODING_G729AB
6 - PKT_ENCODING_FAX_RELAY
7 - PKT_ENCODING_G723A
8 - PKT_ENCODING_G726
9 - PKT_ENCODING_ILBC
10 - PKT_ENCODING_ILBCSS
11 - PKT_ENCODING_G722
12 - PKT_ENCODING_G722_SILENCE_SUPPRESS
13 - PKT_ENCODING_G7221
14 - PKT_ENCODING_G7221_SILENCE_SUPPRESS
15 - PKT_ENCODING_G728
16 - PKT_ENCODING_G728_SILENCE_SUPPRESS
17 - PKT_ENCODING_AMR Bandwidth-efficient Mode
18 - PKT_ENCODING_AMR Octet-align Mode
19 - PKT_ENCODING_AMR/CRC
20 - PKT_ENCODING_AMR/CRC/Interleaving
21 - PKT_ENCODING_AMR/CRC/Robust-sorting
22 - PKT_ENCODING_AMR/CRC/Interleaving/Robust-sorting
23 - PKT_ENCODING_AMR/Interleaving
24 - PKT_ENCODING_AMR/Interleaving/Robust-sorting
25 - PKT_ENCODING_AMR/Robust-sorting
26 - PKT_ENCODING_AMRWB/BW Efficient
27 - PKT_ENCODING_AMRWB Octet-align Mode
28 - PKT_ENCODING_AMRWB/CRC
29 - PKT_ENCODING_AMRWB/CRC/Interleaving
Sub-Field 3: Audio Encoding Type

G711 Audio Encoding Types (these one digit values apply only when the Codec
Type is G711 or G711_SILENCE_SUPPRESS):
0 - CKT_ENCODING_NULL
1 - CKT_ENCODING_G711_ULAW
2 - CKT_ENCODING_G711_ALAW
G723 Audio Encoding Type (these one digit values apply only when the Codec
Type is G723 or G723A):
0 - G723_CODING_RATE_5P3_KBPS (5.3K bits per second)
1 - G723_CODING_RATE_6P3_KBPS (6.3K bits per second)
G726 Audio Encoding Type (this one digit value applies only when the Codec
Type is G726 or G726SS):
0 - G726_CODING_RATE_16KBPS
1 - G726_CODING_RATE_24KBPS
2 - G726_CODING_RATE_32KBPS
3 - G726_CODING_RATE_48KBPS
ILBC Audio Encoding Type (these one digit values apply only when the Codec
Type is ILBC and ILBCSS):
0 - ILBC_CODING_RATE_13P3_KBPS
1 - ILBC_CODING_RATE_15P2_KBPS
G722 Audio Encoding Type (this one digit value applies only when the Codec
Type is G722):
0 - CPC_G722_CODING_RATE_48_KBPS
1 - CPC_G722_CODING_RATE_56_KBPS
2 - CPC_G722_CODING_RATE_64_KBPS

Note: Sub-Field 3 is not applicable (treated as "don’t care") for Code Types
NULL,G729A, G729AB, and FAX_RELAY)

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