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BRI with isdn answer1 configured does not answer calls

Hi all together,

Ive got a problem with a 2600 IOS 12.2(5a). Two BRIs are connected to the same S0. I want one Interface answer to one ISDN number, the other to annother ISDN number. If I configure isdn answer1 on a interface, the interface does not reply to any call any more.

Here comes the config of the interface

interface BRI1/3

description Port fuer Schwelm/Internet-Leitung

ip unnumbered Ethernet0/0

encapsulation ppp

dialer idle-timeout 45

dialer string 02986406473

dialer-group 1

isdn switch-type basic-net3

isdn answer1 909224

ppp authentication chap

end

And here is the "debug isdn q931" output that contains the "called party number"

1w6d: ISDN BR1/3: RX <- SETUP pd = 8 callref = 0x01

1w6d: Sending Complete

1w6d: Bearer Capability i = 0x8890

1w6d: Channel ID i = 0x89

1w6d: Calling Party Number i = 0x21, 0x83, '2986406473', Plan:ISDN, Type:National

1w6d: Called Party Number i = 0xC1, '909224', Plan:ISDN, Type:Subscriber(local)

1w6d: ISDN BR1/3: RX <- SETUP pd = 8 callref = 0x01

1w6d: Sending Complete

1w6d: Bearer Capability i = 0x8890

1w6d: Channel ID i = 0x89

1w6d: Calling Party Number i = 0x21, 0x83, '2986406473', Plan:ISDN, Type:National

1w6d: Called Party Number i = 0xC1, '909224', Plan:ISDN, Type:Subscriber(local)

Thanks for your efforts,

Ulrich

1 ACCEPTED SOLUTION

Accepted Solutions
Bronze

Re: BRI with isdn answer1 configured does not answer calls

This is likely CSCdv31248, fixed in 12.2(6) and later code.

3 REPLIES

Re: BRI with isdn answer1 configured does not answer calls

Hi,

Can you paste the rest of the debug output, inorder to determine, what is happening ??

Are you having one BRI port or 2 BRI ports ???

On the same interface, you have to configure, ISDN answer1 and answer2, so that first call goes to channel 1 while second goes to channel 2.

Or have you tied up both the interfaces, to use 2 numbers for each interface.

New Member

Re: BRI with isdn answer1 configured does not answer calls

Hi,

there is no more debug output. On the calling router (

There are more interfaces, but no other interface is (in this configuration but not in the one I'm hading for) is connected to the same S0 bus. This configuration works fine without the isdn answer1 statement. But as soon as I add the ISDN answer1 statement, the router does not accept any call. It does not even reject the call as it does with a call sreened by the "isdn caller" statement.

I've been trying a lot of diefferent numbers, including any number of x's between 1 and 11 (e. g. isdn answer1 xxxxxx). I've also tried to configure both answer1 and answer2, but I could not make the router accept any calls.

Bronze

Re: BRI with isdn answer1 configured does not answer calls

This is likely CSCdv31248, fixed in 12.2(6) and later code.

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