[Asterisk-Users] AArgh, * and the 7960

Brian Cuthie brian at systemix.com
Tue May 18 16:07:20 MST 2004


Iain,

This is a known issue with the Cisco phone and Asterisk having to do 
with a change made later in the cvs tree. Try 1.0 stable, or modify 
rtp.c to comment out the two lines as follows:

                /* Re-calculate last TS */
                rtp->lastts = rtp->lastts + ms * 8;
//              if (!f->delivery.tv_sec && !f->delivery.tv_usec) {
                        /* If this isn't an absolute delivery time, 
Check if it is close to our prediction,
                           and if so, go with our prediction */
                        if (abs(rtp->lastts - pred) < 640)
                                rtp->lastts = pred;
                        else {
                                ast_log(LOG_DEBUG, "Difference is %d, ms 
is %d\n", abs(rtp->lastts - pred), ms);
                                mark = 1;
                        }
//              }
        } else {

This seems to work for me. Others may have more insight.

-brian


Nik Martin wrote:

>Out of context, this isn't much information.  Is your network connection OK?
>Is your broadband provider having troubles?  Has some upstream hardware
>changed that you may not be aware of?
>
>
>  
>
>>-----Original Message-----
>>From: asterisk-users-admin at lists.digium.com 
>>[mailto:asterisk-users-admin at lists.digium.com] On Behalf Of 
>>Iain Stevenson
>>Sent: Tuesday, May 18, 2004 1:29 PM
>>To: asterisk-users at lists.digium.com
>>Subject: [Asterisk-Users] AArgh, * and the 7960
>>
>>
>>
>>I've just had the most appalling performance from * ever.  Dialling:
>>
>> Cisco 7960 => asterisk => IAX
>>
>>produces sound drop outs so extreme that the call is useless. 
>> I noted this 
>>in an earlier post. Dialling:
>>
>> Cisco ATA186 => asterisk => IAX
>>
>>is fine.
>>
>>Frankly, I think this is such a bad problem that it should be 
>>sorted in 
>>advance of any of the new features that seem to be getting 
>>such prominence 
>>nowadays.  It was not present earlier in the year and I 
>>haven't upgraded my 
>>7960.  So I don't think you can point the finger entirely in Cisco's 
>>direction.
>>
>>  Iain
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>>
>>    
>>
>
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