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Caption
0Table
1Audio Codecs Supported (Transcoding and Pass-Through)
Rate

(PSX) Codec Selections

Coding

Rates
(Kbps)

Packet Sizes
(bytes)

AMR-Bandwidth Efficient

Variable - mix of 4.75, 5.15, 5.90, 6.70, 7.40, 7.95, 10.20, 12.20

20, 40, 60

AMR-Octet Aligned

Same for all AMR

20, 40, 60

EFR

12.2

20, 40, 60
EVRC

Variable (171, 80, or 16 bit samples per 20 ms)

20, 40, 60

EVRC0

Variable (171, 80, or 16 bit samples per 20 ms)

20

EVRCB0

4.8, 5.8, 6.2, 6.6, 7.0, 7.5, 8.5, 9.3

20
EVRCB

Variable (171, 80, 40, or 16 bit samples per 20 ms)

20, 40, 60

G.711

64

10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60

G.711 with Silence Suppression

64

10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60

G.722

48, 56, 64

10, 20, 30, 40

G.722.1

16, 24, 32

20, 40, 60, 80

G.722.2 (AMRWB-Bandwidth Efficient)

6.6, 8.85, 12.65, 14.25, 15.85, 18.25, 19.85, 23.05, or 23.85

20, 40, 60, 80, 100

G.722.2 (AMRWB-Octet Aligned)

Same for all AMR-WB

20, 40, 60, 80, 100

G.723.1

5.3, 6.3

30, 60, 90, 120, 150

G.723.1A

5.3, 6.3

30, 60, 90, 120, 150

G.726

32

10, 20, 30, 40

G.726 with Silence Suppression

32

10, 20, 30, 40

G.729A (compatible with G.729)

8

20, 40, 60, 80, 100

G.729A+B

8

20, 40, 60, 80, 100

iLBC

13.3, 15.2

30, 60

iLBC with Silence Suppression

13.3, 15.2

30, 60

Opus
  • 6 to 20 (transcoded)
  • 6 to 510 (pass-through)

10, 20, 30, 40, 50, 60

T.38 (version 0)

up to 14.4

 
T.38 (version 3)up to 33.6 

Audio Codecs Supported (Pass-Through Only)

Caption
0Table
1Audio Codecs Supported (Pass-Through Only)
Rate

(PSX) Codec Selections

Coding

Rates
(Kbps)

Packet Sizes
(Bytes)

AMR-CRC

Same for all AMR

20, 40, 60

AMR-CRC Robust Sorting

Same for all AMR

20, 40, 60

AMR-CRC-Interleaving-Robust Sorting

Same for all AMR

20, 40, 60

AMR-Interleaving

Same for all AMR

20, 40, 60

AMR-Interleaving-Robust Sorting

Same for all AMR

20, 40, 60

AMR-Robust Sorting

Same for all AMR

20, 40, 60

Broadvoice

16, 32

5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60

Broadvoice with FEC

32

15, 20, 25, 30, 35, 40, 45, 50, 55, 60
Dolby DVC-2/80008220

EVRC1

Variable (171, 80, or 16 bit samples per 20 ms)

20, 40, 60

EVRC1 FR

8.55

20, 40, 60

EVRCB1

Variable (171, 80, 40, or 16 bit samples per 20 ms)

20, 40, 60

EVRCB1 FR

8.55

20, 40, 60

G722 with Silence Suppression

48, 56, 64

10, 20, 30, 40

G.722.2 (AMRWB-CRC)

Same for all AMR-WB

20, 40, 60, 80, 100

G.722.2 (AMRWB-CRC-Interleaving)

Same for all AMR-WB

20, 40, 60, 80, 100

G.722.2 (AMRWB-CRC-Robust Sorting)

Same for all AMR-WB

20, 40, 60, 80, 100

G.722.2 (AMRWB- CRC-Interleaving-Robust_Sorting)

Same for all AMR-WB

20, 40, 60, 80, 100

G.722.2 (AMRWB-Interleaving)

Same for all AMR-WB

20, 40, 60, 80, 100

G.722.2 (AMRWB-Interleaving-Robust Sorting)

Same for all AMR-WB

20, 40, 60, 80, 100

G.722.2 (AMRWB-Robust Sorting)

Same for all AMR-WB

20, 40, 60, 80, 100

G.728

16

10, 20, 30, 40, 50, 60, 70, 80,

90, 100, 110, 120, 130, 140, 150

G.728 with Silence Suppression

16

10, 20, 30, 40, 50, 60, 70, 80,

90, 100, 110, 120, 130, 140, 150

GSM (full rate)13.220, 40, 60

iSAC HD codec (pass-through and direct media)

10 to 32

30, 60

L16

128

5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60
MS-RTA8, 1620, 40, 60
SILK8, 12, 16, 2420, 40, 60, 80, 100

Speex

8, 16, 32

20, 40, 60

Speex with FEC

8, 16

20, 40, 60

The

Spacevars
0product
selects codecs on a call-by-call basis, and negotiates codec use with destination gateway during initial call setup. The 
Spacevars
0product
also renegotiates the media during a call. The 
Spacevars
0product
defines configuration parameters such as audio codec, packet size, and TOS to apply to individual call legs.

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