[asterisk-users] Long call setup times on SIP to zaptel calls

[Mojo with Horan & Company, LLC]

When we do SIP <-> SIP with asterisk 1.2, we do NOT experience this. 
Polycom 501s, the instant you hit Send on the phone or the digit map 
times out, the target phone rings AND you hear ringback.  it's instant, 
so I would guess this would be configuration on your end. back to the 
digit map timeout maybe?

 > Watching the CLI it does look like it takes a long time for the
 > channel to pick up an dial.
I'm a little confused about your 'pick up and dial' phrase because, 
well, we're talking about SIP here and not Zap :)

David Thomas wrote:
> On 2/15/07, Jordan Novak <jnovak at logisticshealth.com> wrote:
>>
>> I have had a lot of complaints about the time it takes to setup a call. I
>> have timed it and it is almost five seconds before it even starts 
>> ringing.
>> The SIP device sends the request almost instantly but the channel is 
>> taking
>> a long time to pickup and dial. It wouldn't be so bad but they hear 
>> nothing.
>> I would like to provide ringback before the zaptel actually starts 
>> ringing
>> the channel. Has anybody done this, it seems like it would be a zaptel
>> option.
>>
>> Jordan Novak
> 
> I'm not sure if it's related, but we are doing only SIP to SIP calling
> with Asterisk 1.4 and experience the same thing. The signaling shows
> up instantly, but it takes 5-7 seconds before ringback is heard.
> Watching the CLI it does look like it takes a long time for the
> channel to pick up an dial.
> 
> regards,
> David
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