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ISDN BRI 2nd B channel will not stay connected

Hi

I have a 800 router the purpose of this router is to connect to the internet. For the first time it will connect and 2nd B channel comes up fine then after some time 2nd B channel goes down. When idle timer expires and 1st channel goes down we try connecting back and at this time 1st channel comes up but the 2nd channel will never come up again until the router is restarted, also internet connection at this time is very slow. I’m including running comfig.

Thanks in advanced.

Alex

interface BRI0

no ip address

encapsulation ppp

dialer pool-member 1

isdn switch-type basic-ni

isdn spid1 XXXXXXXXXXX

isdn spid2 XXXXXXXXXXX

isdn incoming-voice modem

no cdp enable

ppp authentication chap pap callin

ppp multilink

!

interface Dialer1

description ISP

ip address negotiated

ip access-group 111 in

no ip proxy-arp

ip nat outside

encapsulation ppp

no ip split-horizon

dialer pool 1

dialer remote-name Cisco1

dialer idle-timeout 300

dialer string XXXXXXXXXXX class DialClass

dialer string XXXXXXXXXXX class DialClass

dialer hold-queue 10

dialer load-threshold 1 either

dialer-group 1

pulse-time 0

no cdp enable

ppp authentication chap pap callin

ppp chap hostname XXXXXXXXXXX ppp chap password XXXXXXXXXXX

ppp pap sent-username XXXXXXXXXXX password XXXXXXXXXXX

ppp multilink

!

1 REPLY
Bronze

Re: ISDN BRI 2nd B channel will not stay connected

Can you capture "Debug isdn q931" before you reload the router to make the 2nd channel kick in so that we can who/what is stopping the 2nd channel from coming up ? Also upgrade to some latest IOS if you are running an old image.

~Zulfi

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