[Asterisk-Users] Caller id and the number of rings

[Adam Goryachev]

On Wed, 2004-09-08 at 13:43, HengWee Chin wrote:
> Hi all,
> 
>    I have the following setup
>    PSTN -> ASTERISK -> IVR (using dialogic card)
> 
> 1) Caller id information is presented to asterisk during the first and 
> second ring.
> 2) Hence, Asterisk waits for 2 rings before pickup the call and forwarding 
> to the appropriate FXS port.
> 3) The IVR application also waits for 2 rings before picking up the call to 
> get the caller id.
> 4) Hence any caller calling to the IVR will have to wait for 4 rings before 
> he is serviced. This is too long.
> 5) Anyone have any idea how can I reduced the number of rings and still have 
> caller id available to IVR?

AFAIK, if asterisk has already waited 2 rings for the callerid, then why
would the IVR need to wait as well? You shouldn't need to wait in the
dialplan as well. Try removing that, and you should still have callerid.

> 6) If I were to switch PRI ISDN, would I still have the same problem?

Yup, we use an E1, and can answer immediately (no rings at all) and
still have callerid. This is ultimately the best solution, regardless of
your application. The only time you don't use it, is if you can't afford
it. AFAICT, the second best solution is to use chan_capi/zaphfc with
supported BRI cards.

Just my 0.02c worth

Regards,
Adam

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Adam Goryachev
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