[asterisk-users] Does Asterisk support DNIS?

Eric "ManxPower" Wieling eric at fnords.org
Sun Feb 18 13:14:42 MST 2007


It will do so automatically if it is working.  Asterisk will stuff those 
digits into ${EXTEN}, therefore you need an exten => _XXX,1,Whatever if 
you are expecting 3 digits.

Until recently we had DID service from our telco on an E&M Wink 
channelized voice T-1.  The above is what we did.

David Ruggles wrote:
> Yuan (and Matt),
> 
> Thanks for the reply, I'm sorry I kind of vented, I just got very frustrated
> with trying to configure Asterisk for what (in a proprietary PBX) is
> normally one of the easiest parts of configuration.
> 
> With a wink start T1 the DNIS digits are transmitted in-band. The Network
> goes off hook, the PBX winks (goes off hook for 200ms) and then the network
> sends DNIS (and ANI if used) as DTMF tones, after the PBX gets the tones it
> answers the call (goes off hook). So you would tell the PBX to look for x
> number of digits and then after getting that number of digits it will answer
> the call. I have the Sangoma A101 configured for wink start, but I can't
> find anything that says how to specify the number DNIS digits to expect. If
> the PBX answers the call instead of just winking, the DTMF tones will be
> transmitted during the call which is what seems to be happening here.
> 
> For more specific information a good overview of the wink start process can
> be found here:
> http://www.cisco.com/en/US/tech/tk652/tk653/technologies_tech_note09186a0080
> 1123bb.shtml#topic2a
> 
> 
> Can anyone tell me how to configure Asterisk to pickup the DNIS digits off a
> wink start T1?
> 
> Thanks,
> 
> David Ruggles
> CCNA MCSE (NT) CNA A+
> Network Engineer	Safe Data, Inc.
> (910) 285-7200	david at safedatausa.com
> 
> 
> 
> -----Original Message-----
> From: asterisk-users-bounces at lists.digium.com
> [mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Yuan LIU
> Sent: Friday, February 16, 2007 5:57 PM
> To: asterisk-users at lists.digium.com
> Subject: RE: [asterisk-users] Does Asterisk support DNIS?
> 
> Matt already replied to your other posting of similar content.  I'm also a 
> bit confused.  Do you mean you have observed that Asterisk is brought into 
> the intended context, but start to react to digits in DNIS one after 
> another?  If so, can you estimate the interval Asterisk stays in each 
> extension?
> 
> If this is true, it seems to suggest that your provider is sending DNIS as a
> 
> DTMF string after Asterisk has answered the call.  Isn't this a bit weird?  
> What does the card's manual say about DNIS (with wink start)?
> 
> Yuan Liu
> 
> 
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