HylaFAX The world's most advanced open source fax server

[Date Prev][Date Next][Thread Prev][Thread Next] [Date Index] [Thread Index]

Re: [hylafax-users] how to set calling party number ?



On Mon, Nov 04, 2002 at 10:45:29PM +0100, Markus Storm wrote:
> > What is CLID in terms of H323, anyway?  Normally it is provided by the 
> > telco.
> 
> Well, not exactly. H.323 is very close to a digital line (ISDN).
> There's an IE (Information Element) called Calling-Party-Number that an 
> ISDN user's device can set. The telco can verify it (and override if 
> necessary), but the end user device must set it.

*This* depends *entirely* on the switch and the generic which is loaded
into that switch.  Some verify, some just let you set it to anything
you want (though they're really not supposed to...), but I hadn't heard
that you were required to set it.  Myabe that's aan H.323 superset
thing.

> Imagine you have a PBX that has the base number 1234 and 10 telephones 
> attached.
> The telco can check whether the CLID the PBX sends out matches 1234X but 
> it cannot check if X should be 1, 2 or 9 because it only sees the call 
> coming from the PBX. Only the PBX knows which telephone the call came 
> from, so only the PBX can set the full CLID (including X).

And in that case (USAdian Direct Outward Dialling), the switch should
have a validation range (and a default) in it's datafill for the trunk
group.

> > On analog lines the telco sets CLID.
> 
> yes, but on digital ones it's the end user who sets it.

Again: not necessarily,  But if yours does work that way, it would have
to be an ioctl to the ISDN driver, ZI would think -- and faxsend almost
certainly doesn't know how to do that.  If you're using the ISDN
specific sender binary, you should UTSL.

Cheers,
-- jra
-- 
Jay R. Ashworth                                                jra@baylink.com
Member of the Technical Staff     Baylink                             RFC 2100
The Suncoast Freenet         The Things I Think
Tampa Bay, Florida        http://baylink.pitas.com             +1 727 647 1274

   "If you don't have a dream; how're you gonna have a dream come true?"
     -- Captain Sensible, The Damned (from South Pacific's "Happy Talk")

____________________ HylaFAX(tm) Users Mailing List _______________________
  To subscribe/unsubscribe, click http://lists.hylafax.org/cgi-bin/lsg2.cgi
 On UNIX: mail -s unsubscribe hylafax-users-request@hylafax.org < /dev/null
  *To learn about commercial HylaFAX(tm) support, mail sales@hylafax.org.*




Project hosted by iFAX Solutions