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Hall of Fame Super Silver

Duplicate Calls on BRI

Hello,

I dont normally work with BRI cirucits, so I was wondering if someone can provide some assistance.  I have 4 BRI circuits in France and when I dial one of the DIDs I see 2 calls coming in at the same time, debug isdn q931:

Jun  6 19:30:12.062: %LINK-3-UPDOWN: Interface BRI0/1/1, changed state to up

Jun  6 19:30:12.250: ISDN BR0/1/0 Q931: RX <- SETUP pd = 8  callref = 0x6F

        Bearer Capability i = 0x9090A3

                Standard = CCITT

                Transfer Capability = 3.1kHz Audio

                Transfer Mode = Circuit

                Transfer Rate = 64 kbit/s

        Channel ID i = 0x89

                Exclusive, B1

        Progress Ind i = 0x8483 - Origination address is non-ISDN 

        Calling Party Number i = 0x1083, '18479326091'

                Plan:Unknown, Type:International

        Called Party Number i = 0x81, '9070'

                Plan:ISDN, Type:Unknown

        Sending Complete

Jun  6 19:30:12.250: ISDN BR0/1/1 Q931: RX <- SETUP pd = 8  callref = 0x6F

        Bearer Capability i = 0x9090A3

                Standard = CCITT

                Transfer Capability = 3.1kHz Audio

                Transfer Mode = Circuit

                Transfer Rate = 64 kbit/s

        Channel ID i = 0x89

                Exclusive, B1

        Progress Ind i = 0x8483 - Origination address is non-ISDN 

        Calling Party Number i = 0x1083, '18479326091'

                Plan:Unknown, Type:International

        Called Party Number i = 0x81, '9070'

                Plan:ISDN, Type:Unknown

        Sending Complete

Jun  6 19:30:16.350: ISDN BR0/1/0 Q931: RX <- SETUP pd = 8  callref = 0x6F

        Bearer Capability i = 0x9090A3

                Standard = CCITT

                Transfer Capability = 3.1kHz Audio

                Transfer Mode = Circuit

                Transfer Rate = 64 kbit/s

        Channel ID i = 0x89

                Exclusive, B1

        Progress Ind i = 0x8483 - Origination address is non-ISDN 

        Calling Party Number i = 0x1083, '18479326091'

                Plan:Unknown, Type:International

        Called Party Number i = 0x81, '9070'

                Plan:ISDN, Type:Unknown

        Sending Complete

Jun  6 19:30:16.350: ISDN BR0/1/1 Q931: RX <- SETUP pd = 8  callref = 0x6F

        Bearer Capability i = 0x9090A3

                Standard = CCITT

                Transfer Capability = 3.1kHz Audio

                Transfer Mode = Circuit

                Transfer Rate = 64 kbit/s

        Channel ID i = 0x89

                Exclusive, B1

        Progress Ind i = 0x8483 - Origination address is non-ISDN 

        Calling Party Number i = 0x1083, '18479326091'

                Plan:Unknown, Type:International

        Called Party Number i = 0x81, '9070'

                Plan:ISDN, Type:Unknown

        Sending Complete

Here is my config:

!

interface BRI0/1/0

no ip address

no ip redirects

isdn switch-type basic-net3

isdn overlap-receiving

isdn point-to-point-setup

isdn incoming-voice voice

isdn supp-service name calling

isdn sending-complete

trunk-group Local-BRI 1

!

interface BRI0/1/1

no ip address

no ip redirects

isdn switch-type basic-net3

isdn overlap-receiving

isdn point-to-point-setup

isdn incoming-voice voice

isdn supp-service name calling

isdn sending-complete

trunk-group Local-BRI 2

I tried the following command without any difference as well:

isdn tei-negotiation first-call

Outbound does not work at all.  IOS is 15.1.4M4.

Is there something I am missing, any idea what is going on here?

Chris

Everyone's tags (3)
3 REPLIES

Duplicate Calls on BRI

These are my working config in Italy.

BRI Point-to-Point in TE mode, this config required static TEI 0 in Italy:

interface BRI1/0

description from TI

no ip address

isdn switch-type basic-net3

isdn overlap-receiving T302 6000

isdn not-end-to-end 64

isdn point-to-point-setup

isdn incoming-voice voice

isdn static-tei 0

isdn skipsend-idverify

voice-port 1/0

input gain -2

output attenuation 4

no non-linear

no vad

compand-type a-law

playout-delay nominal 160

playout-delay mode fixed

cptone IT

timeouts interdigit 6

bearer-cap Speech

BRI Point-to-Point in NT mode, this config required static TEI 0 in Italy:

interface BRI1/1

description vs PBX

no ip address

isdn switch-type basic-net3

isdn overlap-receiving T302 6000

isdn not-end-to-end 64

isdn protocol-emulate network

isdn layer1-emulate network

isdn incoming-voice voice

isdn send-alerting

isdn negotiate-bchan

isdn sending-complete

isdn static-tei 0

isdn skipsend-idverify

line-power

voice-port 1/1

input gain -2

output attenuation 4

no non-linear

no vad

compand-type a-law

playout-delay nominal 160

playout-delay mode fixed

cptone IT

timeouts interdigit 4

bearer-cap Speech

In Point-To-Multipoint setup I remove "isdn protocol-emulate network" and "isdn static-tei 0" commands.

Can you add a debug isdn q921?

Is there no response to incoming ISDN SETUP?

Regards.

Hall of Fame Super Silver

Duplicate Calls on BRI

I got this resolved few days ago, this ended up being a cabling issue.

Chris

Super Bronze

Duplicate Calls on BRI

Hi Chris

Was just going to reply to say it looked like they had cabled two BRI ports to one NTE. Not sure about elsewhere in Eurpoe but here in the UK NTEs have two BRI ports and folks always connect up both ports...

Aaron

Aaron Please remember to rate helpful posts to identify useful responses, and mark 'Answered' if appropriate!
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