Incoming calls creating many many call legs on unassigned extensions.

[David Tamburin]

We have a SIP trunk with some DID's on it.

When a person makes an incoming call to an assigned extension everything works fine.

When a person makes a call to an unassigned extension, it keep creating call legs until the sip trunk fills up.

I believe the call is bouncing back and forth between CUCM and the Voice Router. 

If anyone could shed some light on why this is doing this, I would appreciate it.

Dial peer on router.

dial-peer voice 4001 voip
 destination-pattern 84578708..
 session protocol sipv2
 session target ipv4:10.104.10.13
 dtmf-relay rtp-nte
 codec g711ulaw

And there is a translation pattern in CUCM  84578708XX to 708XX

Here is a show statement as an example...   (8457870855)

rtr2951-1200RT300NBGNY-vg1#show call active voice compact
 <callID>  A/O FAX T<sec> Codec       type        Peer Address       IP R<ip>:<udp>
Total call-legs: 66
    867653 ANS     T350   g711ulaw    VOIP        P8457836333   10.101.122.246:21096
    867654 ORG     T350   g711ulaw    VOIP        P5343230       172.16.2.1:31606
    867660 ANS     T309   g711ulaw    VOIP        P8457036999     10.113.30.17:16422
    867661 ORG     T309   g711ulaw    VOIP        P5910839       172.16.2.1:33864
    867758 ANS     T179   g711ulaw    VOIP        P18455653978       172.16.2.1:30698
    867760 ORG     T179   g711ulaw    VOIP        P8457870855       172.16.2.1:30872
    867761 ANS     T180   g711ulaw    VOIP        P18457870855       172.16.2.1:35106
    867763 ORG     T180   g711ulaw    VOIP        P8457870855       172.16.2.1:31734
    867764 ANS     T180   g711ulaw    VOIP        P18457870855       172.16.2.1:30624
    867766 ORG     T180   g711ulaw    VOIP        P8457870855       172.16.2.1:30982
    867767 ANS     T180   g711ulaw    VOIP        P18457870855       172.16.2.1:35682
    867769 ORG     T180   g711ulaw    VOIP        P8457870855       172.16.2.1:30380
    867770 ANS     T181   g711ulaw    VOIP        P18457870855       172.16.2.1:31704
    867772 ORG     T181   g711ulaw    VOIP        P8457870855       172.16.2.1:30574
    867773 ANS     T210   g711ulaw    VOIP        P18453638148       172.16.2.1:31578
    867774 ORG     T210   g711ulaw    VOIP        P8455610990      239.192.1.1:16384
    867775 ANS     T181   g711ulaw    VOIP        P18457870855       172.16.2.1:30432
    867777 ORG     T181   g711ulaw    VOIP        P8457870855       172.16.2.1:30474
    867778 ANS     T182   g711ulaw    VOIP        P18457870855       172.16.2.1:35426
    867780 ORG     T182   g711ulaw    VOIP        P8457870855       172.16.2.1:31172
    867783 ANS     T182   g711ulaw    VOIP        P18457870855       172.16.2.1:30168
    867785 ORG     T182   g711ulaw    VOIP        P8457870855       172.16.2.1:31280
    867786 ANS     T182   g711ulaw    VOIP        P18457870855       172.16.2.1:30290
    867788 ORG     T182   g711ulaw    VOIP        P8457870855       172.16.2.1:30412
    867789 ANS     T183   g711ulaw    VOIP        P18457870855       172.16.2.1:30644
    867791 ORG     T183   g711ulaw    VOIP        P8457870855       172.16.2.1:31042
    867792 ANS     T183   g711ulaw    VOIP        P18457870855       172.16.2.1:30950
    867794 ORG     T183   g711ulaw    VOIP        P8457870855       172.16.2.1:30734
    867795 ANS     T183   g711ulaw    VOIP        P18457870855       172.16.2.1:30996
    867797 ORG     T183   g711ulaw    VOIP        P8457870855       172.16.2.1:31402
    867798 ANS     T184   g711ulaw    VOIP        P18457870855       172.16.2.1:30016
    867800 ORG     T184   g711ulaw    VOIP        P8457870855       172.16.2.1:35250
    867801 ANS     T185   g711ulaw    VOIP        P18457870855       172.16.2.1:32022
    867803 ORG     T185   g711ulaw    VOIP        P8457870855       172.16.2.1:30786
    867804 ANS     T185   g711ulaw    VOIP        P18457870855       172.16.2.1:30538
    867806 ORG     T185   g711ulaw    VOIP        P8457870855       172.16.2.1:35956
    867807 ANS     T186   g711ulaw    VOIP        P18457870855       172.16.2.1:35740
    867809 ORG     T186   g711ulaw    VOIP        P8457870855       172.16.2.1:30514
    867810 ANS     T186   g711ulaw    VOIP        P18457870855       172.16.2.1:31796
    867812 ORG     T186   g711ulaw    VOIP        P8457870855       172.16.2.1:35964
    867813 ANS     T186   g711ulaw    VOIP        P18457870855       172.16.2.1:35942
    867815 ORG     T186   g711ulaw    VOIP        P8457870855       172.16.2.1:30730
    867816 ANS     T187   g711ulaw    VOIP        P18457870855       172.16.2.1:35316
    867818 ORG     T187   g711ulaw    VOIP        P8457870855       172.16.2.1:30026
    867819 ANS     T187   g711ulaw    VOIP        P18457870855       172.16.2.1:30466
    867821 ORG     T187   g711ulaw    VOIP        P8457870855       172.16.2.1:35966
    867822 ANS     T188   g711ulaw    VOIP        P18457870855       172.16.2.1:30428
    867824 ORG     T188   g711ulaw    VOIP        P8457870855       172.16.2.1:30318
    867825 ANS     T188   g711ulaw    VOIP        P18457870855       172.16.2.1:30204
    867827 ORG     T188   g711ulaw    VOIP        P8457870855       172.16.2.1:32816
    867828 ANS     T188   g711ulaw    VOIP        P18457870855       172.16.2.1:30826
    867830 ORG     T188   g711ulaw    VOIP        P8457870855       172.16.2.1:31696
    867831 ANS     T189   g711ulaw    VOIP        P18457870855       172.16.2.1:31356
    867833 ORG     T189   g711ulaw    VOIP        P8457870855       172.16.2.1:32472
    867834 ANS     T189   g711ulaw    VOIP        P18457870855       172.16.2.1:31340
    867836 ORG     T189   g711ulaw    VOIP        P8457870855       172.16.2.1:30626
    867848 ANS     T149   g711ulaw    VOIP        P18454626621       172.16.2.1:30892
    867850 ORG     T149   g711ulaw    VOIP        P8455625855       172.16.2.1:31538
    867851 ANS     T149   g711ulaw    VOIP        P18457870855       172.16.2.1:30620

thanks,

Davidt

[Nadeem Ahmed]

Can you please send me show run from router and do you have debugs for any failed or loop call.

debug voice ccapi inout

debug ccsip message.

Br,

nadeem Ahmed

[David Tamburin]

I tried number 5625855

[Nadeem Ahmed · Accepted solution]

seems like the routing loop is happening around here, call that comes from ITSP than matches the dial-peer voice 1 . a dial-peer voice 4010 pointing to call-manager if there are any number that are not provisioned/configured .CUCM will send back 404 not fund to VGW then, then VGW hunt to the next dial-peer and find hit a dial-peer voice 4003 pointing to back to the provider at which point they will send the call back to use creating a loop.

Can you please add "huntstop" on these dial-peer also make two test call one for non-working another working and see the behavior .

dial-peer voice 1 voip
 session protocol sipv2
 incoming called-number .%
 dtmf-relay rtp-nte h245-alphanumeric
 codec g711ulaw
 
 
 dial-peer voice 4010 voip
 destination-pattern 8455625855
 session protocol sipv2
 session target ipv4:10.104.10.13
 dtmf-relay rtp-nte
 codec g711ulaw
 
 
 dial-peer voice 4003 voip
 destination-pattern [2-9]......
 session protocol sipv2
 session target ipv4:172.16.2.1
 voice-class sip early-offer forced
 dtmf-relay rtp-nte h245-alphanumeric
 codec g711ulaw

Br,

nadeem Ahmed

[David Tamburin]

Nadeem,

Thanks for the solution, seems to be working fine now.