[Asterisk-Users] Cisco 7960 and short delay before voice starts after ring.

[John Fraizer]

For what it's worth, I don't have any delay between answer and audio with my 
  asterisk server and 7960G either originating or answering.  It doesn't 
matter if it's a call to/from another SIP/IAX device or to/from PSTN.  It's 
pretty much instant (not detectable by humans at least).  So, there may be 
some truth to the fact that the delay is caused by the Asterisk install in 
your case.  There are so many variables that it is very hard to tell but, 
since I don't see the delay, I am leaning towards it being an Asterisk 
implementation issue.

Here's what I'm running:

Compaq DL380 1Gha with 1GB of memory

Redhat Linux 8.0 (soon to be Gentoo - amazing difference in performance)

Asterisk version: CVS-02/15/04-14:03:51

7960 Firmware Version:
Application Load ID = P0S3-06-1-00
Boot Load ID = PC030301
DSP Load ID = PS03AT38

I'm using the ULAW codec.

John


Low, Adam wrote:
> Well I just took a look at the TAC case and things dont look good, seems the TAC are now blaming Asterisk for the problem but I will go through there debugs and push back, will let you know.
> 
> -----Original Message-----
> From: James Sizemore [mailto:james at deny.org]
> Sent: 08 March 2004 22:09
> To: asterisk-users at lists.digium.com
> Subject: Re: [Asterisk-Users] Cisco 7960 and short delay before voice
> star ts after ring.
> 
> 
> Thanks for the information.  You have saved me a few hours on the phone 
> with TAC. <smile>
> 
> 
> Low, Adam wrote:
> 
> 
>>We have a TAC case open on this issue (reference DDTS CSCed48311) as well, apparently it was going to be fixed in a 7.1 release (yes I know we're only at 6.2 but that's what Cisco stated) but now we are hearing that it will not be fixed in that release but would most likely be further down the track. The issue is specific to SIP on 79xx phones, H.323/SCCP/MGCP all work fine. We're hoping to get a *special* release of the bug fixed SIP code for testing within the next 3/4 weeks. If we get it I'll post an update ...
>>
>>-----Original Message-----
>>From: Duane [mailto:digium at aus-biz.com]
>>Sent: 03 March 2004 15:12
>>To: asterisk-users at lists.digium.com
>>Subject: Re: [Asterisk-Users] Cisco 7960 and short delay before voice
>>starts after ring.
>>
>>
>>Bisker, Scott (7805) wrote:
>> 
>>
>>
>>>I think what James is referring to is the delay once the call already
>>>been dialed.  It's not specific to Ciscos, as I'm experiencing the
>>>same problem on my polycom phones.  Must be SIP related.
>>>
>>>The problem is that once a call is dialed, when the remote party
>>>picks up the phone, the first half second is cutoff.  The remote
>>>party won't hear the first half second of the call.  I had this
>>>happend several times in the last few days.  I've also had a few
>>>complaints from users recently.  Here's what it looks like.
>>>   
>>>
>>
>>I noticed the same issue using a SIP soft phone, I can't recall having 
>>the same issue with a IAX soft phone, pretty sure it didn't happen... 
>>I'm testing now to see if I can make it happen, but it seems to be fine...
>>
>> 
>>
> 
> 
> 
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