The following table lists all sub-fields in Ingress and Egress Codec Type fields. A colon character (":") separates sub-field 1 from 2 and separates 2 from 3.

The Codec Type string is always six (6) characters, including both colons.

Note

Circuit calls are always codec type G.711.

Codec Type Sub-fields


Ingress and Egress Codec Type Sub-Field Variables

Sub-Field

Description

Network Type

(sub-field 1)

  • C - Circuit Network
  • P - Packet Network

Codec Type

(sub-field 2)

  • 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_G7221SS
  • 15 - PKT_ENCODING_G728
  • 16 - PKT_ENCODING_G728SS
  • 17 - PKT_ENCODING_AMR_BW_EFFICIENT
  • 18 - PKT_ENCODING_AMR_OCTET_ALIGNED
  • 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_ALIGNED
  • 28 - PKT_ENCODING_AMRWB_CRC
  • 29 - PKT_ENCODING_AMRWB_CRC_INTERLEAVING
  • 30 - PKT_ENCODING_AMRWB_CRC_ROBUST_SORTING
  • 31 - PKT_ENCODING_AMRWB_CRC_INTERLEAVING_ROBUST_SORTING
  • 32 - PKT_ENCODING_AMRWB_INTERLEAVING
  • 33 - PKT_ENCODING_AMRWB_INTERLEAVING_ROBUST_SORTING
  • 34 - PKT_ENCODING_AMRWB_ROBUST_SORTING
  • 35 - PKT_ENCODING_EVRC (Interleaved/Bundled format)
  • 36 - PKT_ENCODING_EVRC0 (Header-free format)
  • 37 - PKT_ENCODING_EVRC1 (Compact-bundled format, Half-rate in single rate mode)
  • 38 - PKT_ENCODING_EVRC1_FR (Compact-bundled format, Full-rate in single rate mode)
  • 39 - PKT_ENCODING_EVRCB (Interleaved/Bundled format)
  • 40 - PKT_ENCODING_EVRCB0 (Header-free format)
  • 41 - PKT_ENCODING_EVRCB1 (Compact-bundled format, Half-rate in single rate operation)
  • 42 - PKT_ENCODING_EVRCB1_FR (Compact-bundled format, Full-Rate in single rate operation)
  • 43 - PKT_ENCODING_EFR
  • 46 - PKT_ENCODING_G726SS
  • 49 - PKT_ENCODING_SILK_8
  • 50 - PKT_ENCODING_SILK_12
  • 51 - PKT_ENCODING_SILK_16
  • 52 - PKT_ENCODING_SILK_24
  • 55 - PKT_ENCODING_G7291
  • 56 - PKT_ENCODING_BV16
  • 57 - PKT_ENCODING_BV32
  • 58 - PKT_ENCODING_BV32_FEC
  • 59 - PKT_ENCODING_SPEEX_8
  • 60 - PKT_ENCODING_SPEEX_16
  • 61 - PKT_ENCODING_SPEEX_32
  • 62 - PKT_ENCODING_SPEEX_FEC_8
  • 63 - PKT_ENCODING_SPEEX_FEC_16
  • 64 - PKT_ENCODING_L16_16
  • 65 - PKT_ENCODING_ISAC
  • 69 - PKT_ENCODING_Opus
  • 70 - PKT_ENCODING_EVS

Audio Encoding

(sub-field 3)

G711 Audio Encoding Types (when Codec Type is PKT_ENCODING_G711 or PKT_ENCODING_G711_SILENCE_SUPPRESS):

  • 0 - CKT_ENCODING_NULL
  • 1 - CKT_ENCODING_G711_ULAW
  • 2 - CKT_ENCODING_G711_ALAW

G722 Audio Encoding Types (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

G.722.1 Audio Encoding Types (when the Codec Type is G7221):

  • 0 - CPC_G7221_CODING_RATE_24_KBPS
  • 1 - CPC_G7221_CODING_RATE_32_KBPS
  • 2 - CPC_G7221_CODING_RATE_16_KBPS

G723 Audio Encoding Types (when the Codec Type is PKT_ENCODING_G723 or PKT_ENCODING_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 Types (when the Codec Type is PKT_ENCODING_G726):

  • 0 - G726_CODING_RATE_16KBPS
  • 1 - G726_CODING_RATE_24KBPS
  • 2 - G726_CODING_RATE_32KBPS
  • 3 - G726_CODING_RATE_48KBPS

ILBC Audio Encoding Types (when the Codec Type is PKT_ENCODING_ILBC and PKT_ENCODING_ILBCSS):

  • 0 - ILBC_CODING_RATE_13P3_KBPS
  • 1 - ILBC_CODING_RATE_15P2_KBPS 

T38 Audio Encoding Types (when the Codec Type is PKT_ENCODING_FAX_RELAY)

  • 0 - T38_VERSION_0
  • 3 - T38_VERSION_3

AMR Audio Encoding Types (when the Codec Type is AMR)

  • 0 - CPC_AMR_CODING_RATE_4P75_KBPS
  • 1 - CPC_AMR_CODING_RATE_5P15_KBPS
  • 2 - CPC_AMR_CODING_RATE_5P9_KBPS
  • 3 - CPC_AMR_CODING_RATE_6P7_KBPS
  • 4 - CPC_AMR_CODING_RATE_7P4_KBPS
  • 5 - CPC_AMR_CODING_RATE_7P95_KBPS
  • 6 - CPC_AMR_CODING_RATE_10P2_KBPS
  • 7 - CPC_AMR_CODING_RATE_12P2_KBPS

AMRWB Audio Encoding Types (when the Codec Type is AMRWB)

  • 0 - CPC_AMRWB_CODING_RATE_6P6_KBPS
  • 1 - CPC_AMRWB_CODING_RATE_8P85_KBPS
  • 2 - CPC_AMRWB_CODING_RATE_12P65_KBPS
  • 3 - CPC_AMRWB_CODING_RATE_14P25_KBPS
  • 4 - CPC_AMRWB_CODING_RATE_15P85_KBPS
  • 5 - CPC_AMRWB_CODING_RATE_18P25_KBPS
  • 6 - CPC_AMRWB_CODING_RATE_19P85_KBPS
  • 7 - CPC_AMRWB_CODING_RATE_23P05_KBPS
  • 8 - CPC_AMRWB_CODING_RATE_23P85_KBPS

EVRC Audio Encoding Types (when the Codec Type is EVRC or EVRCB0)

  • 0 - CPC_EVRCB_OP_POINT_0        (9.3 kbps)
  • 1 - CPC_EVRCB_OP_POINT_1        (8.5 kbps)
  • 2 - CPC_EVRCB_OP_POINT_2        (7.5 kbps)
  • 3 - CPC_EVRCB_OP_POINT_3        (7.0 kbps)
  • 4 - CPC_EVRCB_OP_POINT_4        (6.6 kbps)
  • 5 - CPC_EVRCB_OP_POINT_5        (6.2 kbps)
  • 6 - CPC_EVRCB_OP_POINT_6        (5.8 kbps)
  • 7 - CPC_EVRCB_OP_POINT_7        (4.8 kbps)


NOTE (1): Audio Encoding Types are not applicable to Codec Types NULL, G729A, G729AB, and EVS.
NOTE (2): 32 kbps is the only rate available for G726 at R4.0.
NOTE (3): For Opus and T38 audio encodings, the modeset value negotiated in offer/answer is logged in the CDR as a decimal value

NOTE (4): Value for SILK and Opus indicates the max average bitrate

Codec Type String Examples

Codec String Examples

Codec StringDescription
P:4:1

Ingress or egress leg is from a packet network with G.729A encoding.

The Audio Encoding Type of "1" is meaningless for G.729A packet encoding.

C:1:2

Ingress or egress leg is from a circuit network with G.711 encoding and a Law audio encoding.

P:1:2

G.711 packet call with aLaw encoding.

C:3:1

G.723 circuit call a 6300 bits per second.

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