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New Member

ISDN BRI problem

Hi all,

I have connected my Cisco 2811 router to PBX via isdn bri, the problem is that i receive calls from remote branches, but when i try to call i receive a busy singal from router,what can cause this.

Thx in advance...

4 REPLIES
Silver

Re: ISDN BRI problem

Hi,

What PBX are you using?

You would have to post your config for more help.

I would also suggest capturing the output from "debug isdn q931" command while attempting an outbound call and posting that also. (assuming you are using H323)

How is your PBX setup? does it require an access code on that BRI trunk?

Cheers,

Tim.

New Member

Re: ISDN BRI problem

i am using siemens hipath 3300 series pbx.

My config is :

interface BRI0/0/0

no ip address

isdn switch-type basic-net3

isdn protocol-emulate network

isdn tei-negotiation preserve

isdn layer1-emulate network

isdn incoming-voice voice

isdn static-tei 0

isdn skipsend-idverify

SHOW ISDN STATUS:

Global ISDN Switchtype = basic-net3

ISDN BRI0/0/0 interface

******* Network side configuration *******

dsl 0, interface ISDN Switchtype = basic-net3

Layer 1 Status:

ACTIVE

Layer 2 Status:

TEI = 0, Ces = 1, SAPI = 0, State = MULTIPLE_FRAME_ESTABLISHED

Layer 3 Status:

0 Active Layer 3 Call(s)

Active dsl 0 CCBs = 0

The Free Channel Mask: 0x80000003

debug isdn q931:

4d01h: ISDN BR0/0/0 Q931: RX <- SETUP pd = 8 callref = 0x01

Bearer Capability i = 0x9090A3

Standard = CCITT

Transfer Capability = 3.1kHz Audio

Transfer Mode = Circuit

Transfer Rate = 64 kbit/s

Channel ID i = 0x83

Progress Ind i = 0x8183 - Origination address is non-ISDN

Calling Party Number i = 0x0180, '122'

Plan:ISDN, Type:Unknown

4d01h: ISDN BR0/0/0 Q931: TX -> CALL_PROC pd = 8 callref = 0x81

Channel ID i = 0x89

4d01h: ISDN BR0/0/0 Q931: TX -> DISCONNECT pd = 8 callref = 0x81

Cause i = 0x8290 - Normal call clearing

4d01h: ISDN BR0/0/0 Q931: RX <- RELEASE pd = 8 callref = 0x01

4d01h: ISDN BR0/0/0 Q931: TX -> RELEASE_COMP pd = 8 callref = 0x81

second call attempt:

4d01h: ISDN BR0/0/0 Q931: RX <- SETUP pd = 8 callref = 0x01

Bearer Capability i = 0x9090A3

Standard = CCITT

Transfer Capability = 3.1kHz Audio

Transfer Mode = Circuit

Transfer Rate = 64 kbit/s

Channel ID i = 0x83

Progress Ind i = 0x8183 - Origination address is non-ISDN

Calling Party Number i = 0x0180, '124'

Plan:ISDN, Type:Unknown

4d01h: mbrd_e1t1_vic_connect: setup failed

4d01h: flex_dsprm_tdm_xconn: voice-port(0/0/0), dsp_channel(/0/4/0)

4d01h: ISDN BR0/0/0 Q931: TX -> CALL_PROC pd = 8 callref = 0x81

Channel ID i = 0x89

4d01h: ISDN BR0/0/0 Q931: TX -> DISCONNECT pd = 8 callref = 0x81

Cause i = 0x8290 - Normal call clearing

4d01h: ISDN BR0/0/0 Q931: RX <- RELEASE pd = 8 callref = 0x01

4d01h: ISDN BR0/0/0 Q931: TX -> RELEASE_COMP pd = 8 callref = 0x81

Silver

Re: ISDN BRI problem

Hi,

What about your dial peer config?

Does your PBX require an access code on that trunk?

Cheers,

Tim

New Member

Re: ISDN BRI problem

dial-peer voice 10 voip

description HO & PR BRANCH

destination-pattern 10...

translate-outgoing calling 1

session target ipv4:10.0.4.252

dial-peer voice 71 pots

destination-pattern 71...

direct-inward-dial

port 0/0

forward-digits 3

NO pbx does not requrire access code?

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