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Empty or NULL DNIS, difficulty routing the call

Unanswered Question
Mar 21st, 2014
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Hi folks,

I have an issue in a site in Austria that is related to isdn overlap. I recently migrated this site from a PBX to CUCM v9.1. Just recently i found out that some callers to the facility were not getting through, which was related to isdn overlap-receiving. That issue is now resolved, however there is one number (the site prefix) that should be redirected to reception when it is called.

Site prefix - +43166105  followed by 4 digits

When i call the +43166105 number it shows up on my gateway with no DNIS information and is waiting for extra digits as per the ISDN overlap requirement. The requirement is that if no digits are entered it should redirect to reception but i cannot get it to work without breaking the overlap receiving config. Presently if digits are entered they are expanded to e.164 and sent to CUCM.

What i have tried aleady is add the following incoming DP on the expectation that the DP would be matched on ANI as Destination pattern, and null DNIS would be translated to the reception number, this piece of configuration worked but had the unexpected side effect of breaking the overlap recieving configuration

dial-peer voice 98 pots
trunkgroup A1_Telekom
translation-profile incoming INBOUND
service session
destination-pattern .
fax rate disable
forward-digits all


voice translation-rule 1
rule 3 /^$/ /+431661050/

 

Here is my configuration as it stands, everything works except +43166105 , presently to reach reception a caller can enter '0' after dialing the +43166105 prefix

.........................................................................................................................

trunk group A1_Telekom
 carrier-id Vienna_A1_Telekom
 description Vienna_PSTN_Trunks
 hunt-scheme round-robin both
 translation-profile outgoing OUTBOUND

 

voice translation-rule 1
 rule 1 /\(^3...$\)/ /+43166105\1/
 rule 2 /^0$/ /+431661050\1/

voice translation-rule 3
 rule 1 /^/ /00/ type national national
 rule 2 /^/ /000/ type international international

 

voice translation-profile INBOUND
 translate calling 3
 translate called 1

interface Serial0/0/0:15

 description PSTN
 no ip address
 encapsulation hdlc
 no logging event link-status
 isdn switch-type primary-net5
 isdn overlap-receiving T302 5000
 isdn incoming-voice voice
 isdn send-alerting
 isdn bchan-number-order ascending
 trunk-group A1_Telekom
 no keepalive
 no cdp enable

 

dial-peer voice 99 pots
 trunkgroup A1_Telekom
 service session
 destination-pattern 0T
 fax rate disable
 direct-inward-dial
 forward-digits all

dial-peer voice 100 pots
 trunkgroup A1_Telekom
 translation-profile incoming INBOUND
 service session
 incoming called-number .T
 fax rate disable
 forward-digits all
!
!
dial-peer voice 1000 voip
 description #### INCOMING CALLED NUMBER PEER ####
 translation-profile incoming GX-ready-access
 modem passthrough nse codec g711ulaw
 incoming called-number .
 voice-class codec 1
 dtmf-relay rtp-nte
 fax rate 14400
 no vad
!
dial-peer voice 1001 voip
 preference 1
 service session
 destination-pattern +43166105....
 progress_ind setup enable 3
 progress_ind progress enable 8
 modem passthrough nse codec g711ulaw
 session protocol sipv2
 session target ipv4:10.64.24.159
 voice-class codec 1
 dtmf-relay rtp-nte
 fax rate 14400
 ip qos dscp cs3 signaling
 no vad
!
dial-peer voice 1002 voip
 preference 2
 service session
 destination-pattern +43166105....
 progress_ind setup enable 3
 progress_ind progress enable 8
 modem passthrough nse codec g711ulaw
 session protocol sipv2
 session target ipv4:10.65.28.30
 voice-class codec 1
 dtmf-relay rtp-nte
 fax rate 14400
 ip qos dscp cs3 signaling
 no vad
!

dial-peer voice 1003 voip
 preference 1
 service session
 destination-pattern +431661050
 progress_ind setup enable 3
 progress_ind progress enable 8
 modem passthrough nse codec g711ulaw
 session protocol sipv2
 session target ipv4:10.64.24.159
 voice-class codec 1
 dtmf-relay rtp-nte
 fax rate 14400
 ip qos dscp cs3 signaling
 no vad
!
dial-peer voice 1004 voip
 preference 2
 service session
 destination-pattern +431661050
 progress_ind setup enable 3
 progress_ind progress enable 8
 modem passthrough nse codec g711ulaw
 session protocol sipv2
 session target ipv4:10.65.28.30
 voice-class codec 1
 dtmf-relay rtp-nte
 fax rate 14400
 ip qos dscp cs3 signaling
 no vad
!

 

 

 

 

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