VoXaLot Codecs
When one has chosen a VoIP service provider to include in a dialplan there is a provision for stipulating which codecs to use, or exclude, in relation to each of them, EXCEPT VoXaLot itself!
Some of my calls are VoXaLot to VoXaLot calls, and not being able to stipulate which codec is going to be used, is sometimes a major PITA, depending on the equipment and network being used. Would someone please fix this oversight (?) ASAP. |
VoXaLot to VoXaLot - RTP server codec settings not relevant
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The codecs used will be whatever is negotiated between your SIP device and the endpoint SIP device where your SIP call is sent (ie, the codec settings on the SIP device of the VoXaLot user you are calling). The call will fail (eg with "488 Not Acceptable Here") if codec negotiation with the other device fails. The best you can do is set the codecs you want to use in your SIP device, and hope that the other SIP device supports one of them. |
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Do all Sip Broker access gateways support the same CODECS? Assume my ATA registered at Voxalot, only supports G.711-A, a Sip Broker access gateway only supports G.711-U (not support G.711-A). A caller access this Sip Broker number and dial my Voxalot account " *061-25XXXX ". The call will fail? or the transcoding will happen? Thanks. |
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SIP broker is a SIP broker. Voxalot is a VSP broker for us.:) |
transcoding on incoming SIP calls
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I've got my Atcom AT-530 SIP phone registered to us.voxalot.com. It does not support the gsm codec. If I send a SIP call to *010 <voxalot number> @sipbroker.com using the X-Ten Lite softphone, stipulating the gsm codec only, the call fails with "480 Temporarily Unavailable": SEND >> 64.34.162.221:5060 Code:
INVITE sip:*01066xxxx@sipbroker.com SIP/2.0 RECEIVE << 64.34.162.221:5060 Code:
SIP/2.0 480 Temporarily Unavailable The call is accepted if I select the ulaw codec: Code:
SEND >> 64.34.162.221:5060 RECEIVE << 64.34.162.221:5060 Code:
SIP/2.0 200 OK |
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Another : assume my ATA registered at Voxalot, only supports G.723, i use ATA to dial *747-1-747XXXXXXX(a Gizmoproject num) via Sipbroker, as i know, Gizmo does not support G.723. Voxalot will not transcode and the call will fail. Maybe, Voxalot should make a form to show when transcoding will happen and when the call will fail for CODECS match and all Voxalot supporting CODECS...all Voxalot supporting transcoding types . It also can help members improve voice quality by ourselves. |
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