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dor
Registration Date: 01.01.1970
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10.06.2008 20:45 |
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Dia
Premium Account
Registration Date: 03.03.2006
Posts: 1443
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Well, the PBXes server is dealing with it, since the call is going through, but as you have experienced the results are not ideal.
In the calls scenario you mentioned, there are 2 SIP UAs, which might have a packetization setting that affects the call, but the most important UA is your friend's ATA, which I am willing to bet is Sipura (Linksys) unit.
Start by asking the person, what kind of ATA he or she has. Then mention, they might have to deal with the issue in the future, if and when they acquire their own DIDs. They might be willing to change the setting on a trial basis.
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11.06.2008 22:44 |
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dor
Registration Date: 01.01.1970
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Thanks Diafora, but please, help me understand this better.
First, he has PAP2T, where 30 is predefined default value
Second, how comes it works when calling from other systems, and it's only PBXes that doesn't work well? Don't you see something illogical in making that ATA as a root cause?
Considering that 30 is the default value for Linksys boxes, and it does work for him everywhere - it doesn't work only for me, and only when using PBXes.
What if a thousand others my recipients buy Linksys boxes with pre-set 30 - should I persuade all of them to change it?
C'mon, guys!
This post has been edited 1 time(s), it was last edited by dor on 12.06.2008 at 15:07.
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12.06.2008 15:04 |
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Dia
Premium Account
Registration Date: 03.03.2006
Posts: 1443
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There is actually nothing boring with your question, except that you had an answer regarding the root cause of the issue, and I naively believed the explanation could wait for a couple of days.
The slight incompatibility between all Sipura (now Linksys) devices and Asterisk systems is a well known fact, when two Asterisks are used back to back, and the vocoder is either G.729 or G.711. So the bug is clearly on Linksys' side, but someone could argue that it's not really a bug more of a quirk, since the packetization period interval can be changed via the web interface.
Please note Sipura devices have other slight quirks, for which almost all SIP Proxies had to make changes to accommodate them, due to their popularity. One of them is the G.729 vocoder name in the SDP description of the SIP packets.
Regarding the timeframe of our response, I would like to remind you, the support service we provide via the forums is not meant for time critical issues. Occasionally, we would like to take a weekend off and enjoy life too. I am sorry if this affects the flow of explanations, but not the actual support cases!
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16.06.2008 10:02 |
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