| Frequently Asked Questions |
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| Compatibility |
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| What voice codec's does Callcentric support? |
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For calls from one Callcentric user to another any Codec can be used.
For calls to the voicemail system and for error prompting the following codec's can be used:
GSM
G.729A
G.711 mu-law
G.711 A-law
For calls to the PSTN (traditional landline and mobile phones) the following codec's can be used:
G.723 6.3Kbps
G.729A
G.711 mu-law
G.711 A-law
For calls from the PSTN to your Real Phone Number the following codec's will be used:
G.729A
G.711 mu-law
We recommend that you configure your user agent's codec selection in the following order (with 1 being the highest priority, and 9 the lowest), assuming your user agent supports each of the following. If your user agent doesn't support all of these codec's, just skip the ones that it does not have.
1 - G.729
2 - G.723 6.3Kbps
3 - GSM
4 - iLBC
5 - Speex 8Kbps
6 - G.728
7 - G.726 16Kbps
8 - Speex 16Kbps
9 - G.726 24Kbps
10 - G.726 32Kbps
11 - Speex 32Kbps
12 - G.722 48Kbps
13 - G.722 56Kbps
14 - G.722 64Kbps
15 - G.711 mu-law
16 - G.711 A-law |
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