I guess there's no such ting as "complete number", but a simple interdigit timeout. If you stop dialing and don't enter digits for 10 seconds, it automatically places the call. So, you need a gateway which supports such an interdigit timeout. In theory, you can implement that with an external script in FreeSWITCH. On practice, needs testing and a proof of concept. ________________________________ From: Markus Müller <freeswitchdev@priv.de> To: freeswitch-dev@lists.freeswitch.org Sent: Saturday, September 7, 2013 10:08 PM Subject: Re: [Freeswitch-dev] Call relaying (ISDN <> Freeswitch <> ISDN) Hi all, hi Markus,
how do you determine if it's a complete number? Do you expect the outgoing ISDN channel to tell you that?
Sorry that I don't have all details; I am not as familary as I want to with the ISDN protocols. But I know that each number goes one by one to the outgoing ISDN and then outgoint ISDN tells you back when you have reached a destination. If needed I can make a log when I have my Siemens Hipath placed behind my Freeswitch in NT mode; there you can see the numbers comming one by one.
I also wonder what happens if you attach an ISDN-SIP gateway, like Patton. Will you have a new SIP message (which?) on every dialed digit?
Normaly all the products do the "overlap dialing" crap, as mentioned in my first email. I don't know for sure but I think there is no alternative, especially if you make only SIP and not ISDN. No comments about my design suggestion? Regards, Markus
________________________________ From: Markus Müller <freeswitchdev@priv.de> To: freeswitch-dev@lists.freeswitch.org Sent: Saturday, September 7, 2013 1:52 PM Subject: [Freeswitch-dev] Call relaying (ISDN <> Freeswitch <> ISDN)
Hello Freeswitch Developers,
ISDN in germany (maybe also somewhere else) has a feature,
which colides
with the design of a dialplan: it sends the numbers the user types into his phone LIVE (!) through the ISDN network. If the number is complete, the ISDN network tells it to the caller; Only now the call get established (means the dialplan gets invoked). So you have to do an own step (live and interactive determination of the number) BEFORE the dialplan comes in line.
Because this is object not supported by freeswith, in the following situation
User <-> Analog Phone <-> Siemens Hipath <-> ISDN <-> [FreeTDM <-> Freeswitch <-> FreeTDM] <-> ISDN <-> World <-> ISDN Destiation
you have to do "overlap dialing". Means, freeswitch waits some seconds until the user has entered the last number and then it goes directly to the dialplan.
-> This is not what I need!
I want that it works as if there is no FreeSwitch in between. Means, freeswitch should relay each number the user types into his phone to the ISDN on the remote side, and make the dialplan stuff AFTER the number has been dicovered for completeness.
How do you think this should be implemented? If nobody has an object, I would code this the following way into FreeTDM: If I get a call with a starting number I know that it must go to the external ISDN (means: a second dialplan), I first relay the typed numbers and determine the full number. Only now, when I got the full number, I would give this call to the higher layers.
What you think about this?
Regards, Markus Mueller
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