[asterisk-ss7] always see callingpres in * even when CLIR comes from ss7 party

Robert Kenton robert.kenton at gmail.com
Fri Jun 27 18:55:01 CDT 2008

Try to ask to your telco operator to set the *CLIR override* option in the
trunk group connected to your asterisk server.

All GSM and UMTS networks has this option.


On Fri, Jun 27, 2008 at 2:18 PM, Krzysztof Drewicz <
krzysztofdrewicz at gmail.com> wrote:

> 2008/6/27 Matthew Fredrickson <creslin at digium.com>:
>> Krzysztof Drewicz wrote:
>> > Hello,
>> >
>> > i've done a basic ss7 setup with usecallingpres=yes in zapata.conf
>> > works very good, now whould like to be "just like real telco" and need
>> to
>> > see the calling presentation  number ever when Restriction is set in
>> > incoming call by ss7,
>> >
>> I'm trying to understand what you're asking here.  So you say that when
>> calling presentation is set to restricted, the incoming call in Asterisk
>> has the last 3 one up to three digits are reported as 0's in
>> extensions.conf, and you would like to ignore the calling presentation
>> indicators to see those digits, so you can route them in the dialplan?
> Sorry for not being "easy to understood"
> main problem:
> my ss7 party (telco operator) is seting "Call presentation restriction" and
> is transminig the calling number,
> what i need to achieve is to _see_ the calling number no mather if clip is
> set or is not set by ss7 network.
> for last digits, this is only common scenario, when the end customer on the
> other side of ss7 network uses "CLIR on demand" and then in the ss7 network
> we se the "CLIR" flag and number like +AB CDE FG 00 (only example). But for
> me seeing the calling number is a issue right now, i don't care if it's
> realy the ...FG 00 or ...FG XY (this is _easy_ to achive in dialplan logic).
> found this line of code:
> http://svn.digium.com/view/asterisk/trunk/channels/chan_dahdi.c?view=markup
>   if ((p->use_callerid) && (!ast_strlen_zero(e->iam.calling_party_num))) { 9649           ss7_apply_plan_to_number(p->cid_num, sizeof(p->cid_num), linkset, e->iam.calling_party_num, e->iam.calling_nai); 9650           p->callingpres = ss7_pres_scr2cid_pres(e->iam.presentation_ind, e->iam.screening_ind); 9651         } else 9652           p->cid_num[0] = 0;
> IF i get it good, this line checks for CLIR bit and if it's on it says to
> channel driver "calling number restricted".
> I whould like to pass the calling number, without checking for CILR bit.
> Hope that you understood the above? if not please say and i will do an
> example of call scenario.
> --
> Krzysztof Drewicz
> +48 504 17 55 77
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