isdn callback not working

Unanswered Question
Nov 11th, 2007
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Hi,


I'm trying to configure my router C1841 to allow the callback to isdn remote user.

The callback perfectly work with my analog remote users.

The router did not initiate callback to the remote isdn caller.


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fredlem07 Thu, 11/15/2007 - 04:09
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Hi,


I'm using a dialer profile and I already tried to configure the dialer interface using the commands as described in the "Configure ISDN Caller ID Callback for Dialer Profiles "

section of the document you provided to me but still the same issue.


When I remove the callback from the dialer caller string, the connection can be established by the client isdn modem (whitout callback at this time)

Thanks a lot.


fredlem07 Tue, 12/11/2007 - 00:27
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Here is the configuration of my ISDN dialer interface :


interface Dialer10

ip unnumbered FastEthernet0/0

ip access-group sdm_dialer10_in in

no ip redirects

no ip unreachables

no ip proxy-arp

encapsulation ppp

ip route-cache flow

dialer pool 1

dialer remote-name xxxxxx

dialer idle-timeout 600

dialer enable-timeout 2

dialer string 027429815

dialer caller 027429815 callback

dialer-group 10

peer default ip address dhcp-pool xxx-Users

compress stac software

no cdp enable

ppp callback accept

ppp authentication ms-chap ms-chap-v2 callin

end



Could you please let me know what I'm missing ?


The debug show the following :


Dec 11 09:26:16.610: ISDN BR0/0/0 Q921: User RX <- UI sapi=0 tei=127

Dec 11 09:26:16.610: ISDN BR0/0/0 Q931: SETUP pd = 8 callref = 0x11

Sending Complete

Bearer Capability i = 0x8890

Standard = CCITT

Transfer Capability = Unrestricted Digital

Transfer Mode = Circuit

Transfer Rate = 64 kbit/s

Channel ID i = 0x89

Calling Party Number i = 0x2183, '27429815'

Plan:ISDN, Type:National

Called Party Number i = 0xA1, '27338878'

Plan:ISDN, Type:National

Dec 11 09:26:16.614: ISDN BR0/0/0 **ERROR**: host_incoming_call: DIALER ERROR 0x1: b channel 0, call id 0x48

Dec 11 09:26:16.618: ISDN BR0/0/0 Q921: L2_EstablishDataLink: sending SABME

Dec 11 09:26:16.618: ISDN BR0/0/0 Q921: User TX -> SABMEp sapi=0 tei=125

Dec 11 09:26:16.634: ISDN BR0/0/0 Q921: User RX <- UAf sapi=0 tei=125

Dec 11 09:26:16.634: %ISDN-6-LAYER2UP: Layer 2 for Interface BR0/0/0, TEI 125 changed to up

Dec 11 09:26:16.634: ISDN BR0/0/0 Q921: User TX -> INFO sapi=0 tei=125, ns=0 nr=0

Dec 11 09:26:16.634: ISDN BR0/0/0 Q931: RELEASE_COMP pd = 8 callref = 0x91

Cause i = 0x8095 - Call rejected

Dec 11 09:26:16.654: ISDN BR0/0/0 Q921: User RX <- RR sapi=0 tei=125 nr=1

Dec 11 09:26:26.653: ISDN BR0/0/0 Q921: User TX -> RRp sapi=0 tei=125 nr=0

Dec 11 09:26:26.665: ISDN BR0/0/0 Q921: User RX <- RRf sapi=0 tei=125 nr=1

Dec 11 09:26:31.769: ISDN BR0/0/0 Q921: User RX <- DISCp sapi=0 tei=125

Dec 11 09:26:31.769: %ISDN-6-LAYER2DOWN: Layer 2 for Interface BR0/0/0, TEI 125 changed to down



Thanks a lot for help

Wilson Samuel Thu, 12/20/2007 - 07:17
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Hi,


It says that it has encountered Err:


Dec 11 09:26:16.614: ISDN BR0/0/0 **ERROR**: host_incoming_call: DIALER ERROR 0x1: b channel 0, call id 0x48


Dec 11 09:26:16.634: ISDN BR0/0/0 Q931: RELEASE_COMP pd = 8 callref = 0x91

Cause i = 0x8095 - Call rejected



Over here we are yet not very sure why the call has been rejected.


Could you please post the outputs from:


1. Debug Dialer

2. debug ISDN q931

3. debug ppp authentication



Then we can be certain what exactly is causing the rejected calls.


HTH,


Please rate all helpful posts.


Kind Regards,

Wilson Samuel

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