> For the complete documentation index, see [llms.txt](https://prosbcdocs.telcobridges.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://prosbcdocs.telcobridges.com/telecom-references/voice-and-media/voice-codecs.md).
# Voice Codecs
> **Applies to:** Tmedia 2.9, 2.10, 3.0, 3.2
TelcoBridges products support the following voice codecs.
### Supported codecs
* **Universal codecs**
* [G.711](http://en.wikipedia.org/wiki/G.711) - Supported packet durations: 20,30,40,50 and 60 msec
* [G.723.1](http://en.wikipedia.org/wiki/G.723.1) - Supported packet durations: 30,60 and 90 msec
* [G.726](http://en.wikipedia.org/wiki/G.726) - Supported packet durations: 20,30,40,50 and 60 msec
* [G.729a/ab](http://en.wikipedia.org/wiki/G.729) - Supported packet durations: 20,30,40,50,60,70 and 80 msec
* [Clearmode](/telecom-references/voice-and-media/clearmode.md) ([rfc4040](http://tools.ietf.org/html/rfc4040)) - Supported packet durations: 5,10,20,30,40,50,60 msec
* [T.38](http://en.wikipedia.org/wiki/T.38)
* **Other codecs**
* [G.722](http://en.wikipedia.org/wiki/G.722) - Supported packet durations: 5,10,20,30,40,50 and 60 msec
* [G.728](http://en.wikipedia.org/wiki/G.728) - Supported packet durations: 20,30,40,50 and 60 msec
* [G.729eg](http://en.wikipedia.org/wiki/G.729) - Supported packet durations: 20,30,40,50,60,70 and 80 msec
* [iLBC](http://en.wikipedia.org/wiki/Internet_Low_Bit_Rate_Codec) - Supported packet durations: \[13kbps] 30 and 60 msec, \[15kpbs] 20 and 40 msec
* **Wireless codecs** **1**
* [AMR](http://en.wikipedia.org/wiki/Adaptive_multi-rate_compression) - Supported packet durations: 20,40,60 and 80 msec
* [GSM-FR](http://en.wikipedia.org/wiki/Full_Rate) - Supported packet durations: 20 and 30 msec
* [GSM-EFR](http://en.wikipedia.org/wiki/Enhanced_Full_Rate) - Supported packet durations: 20,40 and 60 msec
* [EVRC](http://en.wikipedia.org/wiki/EVRC) - Supported packet durations: 20,40 and 60 msec
* [QCELP](http://en.wikipedia.org/wiki/QCELP) - Supported packet durations: 20,40 and 60 msec
* [G.722.2 (AMR-WB)](/telecom-references/voice-and-media/g-722-2-amr-wb.md) - Supported packet durations: 20,40,60 and 80 msec
### TMG media gateways codec capacity
| Media Gateway | Universal codecs | Universal codecs | Universal codecs | Universal codecs | Universal codecs | Universal codecs | Other codecs | Other codecs | Other codecs | Other codecs | Wireless codecs\*\*1\*\* | Wireless codecs\*\*1\*\* | Wireless codecs\*\*1\*\* | Wireless codecs\*\*1\*\* |
| --------------------------------------------------- | ---------------- | ---------------- | ---------------- | ---------------- | ---------------- | ------------------- | ------------ | ------------ | ------------ | ------------ | ----------------------------------- | ----------------------------------- | ----------------------------------- | ----------------------------------- |
| Media Gateway | G.711 | G.723.1 | G.726 | G.729ab | T.38 | clearmode (rfc4040) | G.722 | G.728 | G.729eg | iLBC | AMR | AMR-WB | GSM-FR/GSM-EFR | EVRC/QCELP |
| TMG800-HR16 | 512 | 508 | 512 | 512 | 508 | 512 | 236 | 232 | 256 | 300 | 364 | 236 | 428 | 380 |
| TMG3200-TE16 TMG7800-TE16 | 512 | 508 | 512 | 512 | 508 | 512 | 236 | 232 | 256 | 300 | 364 | 236 | 428 | 380 |
| TMG3200-TE32 TMG7800-TE32 | 1024 | 1016 | 1024 | 1024 | 1016 | 1024 | 472 | 464 | 512 | 600 | 728 | 472 | 856 | 760 |
| TMG3200-TE48 TMG7800-TE48 | 1536 | 1524 | 1536 | 1536 | 1524 | 1536 | 708 | 696 | 768 | 900 | 1092 | 708 | 1284 | 1140 |
| TMG3200-TE64 TMG7800-TE64 TMG3200-STM1 TMG7800-STM1 | 2048 | 2032 | 2048 | 2048 | 2032 | 2048 | 944 | 928 | 1024 | 1200 | 1456 | 944 | 1712 | 1520 |
### Tdev development platform
#### TMP6400 Codec density
Codec density is comprised of two modes:
* Mixed Mode
* Fixed Mode
**Mixed Mode**
The following densities are achieved when a codec mix is dynamically negotiated.
| Type of VoIP mezzanine | Universal codecs | Universal codecs | Universal codecs | Universal codecs | Universal codecs | Other codecs | Other codecs | Other codecs | Other codecs | Wireless codecs\*\*1\*\* | Wireless codecs\*\*1\*\* | Wireless codecs\*\*1\*\* | Wireless codecs\*\*1\*\* |
| ---------------------- | ---------------- | ---------------- | ---------------- | ---------------- | ---------------- | ------------ | ------------ | ------------ | ------------ | ----------------------------------- | ----------------------------------- | ----------------------------------- | ----------------------------------- |
| Type of VoIP mezzanine | G.711 | G.723.1 | G.726 | G.729ab | T.38 | G.722 | G.728 | G.729eg | iLBC | AMR | AMR-WB | GSM-FR/GSM-EFR | EVRC/QCELP |
| TM-VOIP-1 | 341 | 127 | 169 | 154 | 127 | 59 | 58 | 64 | 75 | 91 | 59 | 107 | 95 |
| TM-VOIP-2 | 682 | 254 | 338 | 308 | 254 | 118 | 116 | 128 | 150 | 182 | 118 | 214 | 190 |
| TM-VOIP-3 | 1023 | 381 | 507 | 462 | 381 | 177 | 174 | 192 | 225 | 273 | 177 | 321 | 285 |
| TM-VOIP-4 | 1364 | 508 | 676 | 616 | 508 | 236 | 232 | 256 | 300 | 364 | 236 | 428 | 380 |
**Fixed mode**
The following densities are achieved when a codec mix is predefined.
| Type of VoIP mezzanine | Universal codecs | Universal codecs | Universal codecs | Universal codecs | Universal codecs | Other codecs | Other codecs | Other codecs | Other codecs | Wireless codecs\*\*1\*\* | Wireless codecs\*\*1\*\* | Wireless codecs\*\*1\*\* | Wireless codecs\*\*1\*\* |
| ---------------------- | ---------------- | ---------------- | ---------------- | ---------------- | ---------------- | ------------ | ------------ | ------------ | ------------ | ----------------------------------- | ----------------------------------- | ----------------------------------- | ----------------------------------- |
| Type of VoIP mezzanine | G.711 | G.723.1 | G.726 | G.729ab | T.38 | G.722 | G.728 | G.729eg | iLBC | AMR | AMR-WB | GSM-FR/GSM-EFR | EVRC/QCELP |
| TM-VOIP-1 | 404 | 128 | 200 | 168 | 128 | 60 | 66 | 72 | 84 | 102 | 60 | 120 | 96 |
| TM-VOIP-2 | 808 | 256 | 400 | 336 | 256 | 120 | 132 | 144 | 168 | 204 | 120 | 240 | 192 |
| TM-VOIP-3 | 1212 | 384 | 600 | 504 | 384 | 180 | 198 | 216 | 252 | 306 | 180 | 360 | 288 |
| TM-VOIP-4 | 1616 | 512 | 800 | 672 | 512 | 240 | 264 | 288 | 336 | 408 | 240 | 480 | 384 |
\[**1**] May require additional licenses
---
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