Ascend Archive
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Re: (ASCEND) Call back on P50
On Wed, Jan 14, 1998 at 09:01:26AM +0100, Rob Dirksen wrote:
> Hai,
Where ?
(joke may not be obvious, "Hai" is german for shark...)
> The call back feature described in the P50 users guide describes that
> the P50 answers the call, hangs up and then calls out to the remote
> party.
Ascend proprietary PPP callback.
> This means that the remote party always pays for the initial call setup.
Exactly.
> In the ISDN signalling is enough information available for the P50 to
> check the origin of the call without actually answering the call (so at
> no costs).
Yep.
> Is there a way to instruct the P50 5.1A to start a call back procedure
> without answering the call from the remote party?
Yep. Simply tell the pipe to _use_ the information from the SETUP,
i.e. the CLID. Set Id Auth=Prefer, set the Calling # in the profile
correctly and the P50 will accept the profile based on CLID. As soon
as this works, enabling Callback=Yes means no longer PPP callback but
CLID callback, the pipe refuses the call without answering it and calls
back a bit later. Works, but be prepared for all kinds of ISDN quirks
to show up here (delay of refusal, B-channel-reservation etc). You may
scan the list archive, this was discussed here in depth for a number of
times.
--
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