Hi Group,
I have configured a 2801 router with 4 ISDN lines. I am observing a very strange behaviour. i.e. if I am not using line for certain time, ISDN line goes down and when I try to make an outgoing call, it comes back with a busy tone and unknown number message on ip phone. At this tage if I make an incoming call, ISDN line comes up and I can start making outgoing calls succcessfully.
Can anyone please advice how to fix this issue ? I have pasted the ocnfiguration below.
ip dhcp pool VOIP network 192.168.3.0 255.255.255.0 default-router 192.168.3.1 option 150 ip 192.168.3.254 ! ! isdn switch-type basic-net3 isdn logging ! voice-card 0 no dspfarm ! ! voice translation-rule 1 rule 1 /1873xxxx/ /507/ ! voice translation-rule 2 rule 2 /1873xxxx/ /501/ ! voice translation-rule 3 rule 3 /1873xxxx/ /502/ ! voice translation-rule 4 rule 4 /1873xxxx/ /506/ ! voice translation-rule 5 rule 5 /1873xxxx/ /500/ ! ! voice translation-profile isdn-incoming translate called 1 ! ! interface FastEthernet0/0 ip address 192.168.3.254 255.255.255.0 duplex auto speed auto ! interface FastEthernet0/1 no ip address duplex auto speed auto ! interface BRI0/0/0 no ip address isdn switch-type basic-net3 isdn overlap-receiving isdn tei-negotiation first-call isdn point-to-point-setup isdn incoming-voice voice isdn sending-complete isdn skipsend-idverify no clns route-cache ! interface BRI0/0/1 no ip address isdn switch-type basic-net3 isdn overlap-receiving isdn tei-negotiation first-call isdn point-to-point-setup isdn incoming-voice voice isdn sending-complete isdn skipsend-idverify ! interface BRI0/1/0 no ip address isdn switch-type basic-net3 isdn overlap-receiving isdn tei-negotiation first-call isdn point-to-point-setup isdn incoming-voice voice isdn sending-complete isdn skipsend-idverify no clns route-cache ! interface BRI0/1/1 no ip address isdn switch-type basic-net3 isdn overlap-receiving isdn tei-negotiation first-call isdn point-to-point-setup isdn incoming-voice voice isdn sending-complete isdn skipsend-idverify no clns route-cache ! ip classless ip route 0.0.0.0 0.0.0.0 192.168.3.1 ! ! ip http server no ip http secure-server ! ! control-plane ! ! ! voice-port 0/0/0 compand-type a-law cptone IE ! voice-port 0/0/1 compand-type a-law cptone IE ! voice-port 0/1/0 compand-type a-law cptone IE ! voice-port 0/1/1 compand-type a-law cptone IE ! ! dial-peer voice 9 pots translation-profile incoming isdn-incoming destination-pattern 9.T direct-inward-dial port 0/0/0 ! dial-peer voice 10 pots translation-profile incoming isdn-incoming destination-pattern 9.T direct-inward-dial port 0/0/1 ! dial-peer voice 11 pots translation-profile incoming isdn-incoming destination-pattern 9.T direct-inward-dial port 0/1/0 ! dial-peer voice 12 pots translation-profile incoming isdn-incoming destination-pattern 9.T direct-inward-dial port 0/1/1 ! ! ! telephony-service max-ephones 42 max-dn 42 ip source-address 192.168.3.254 port 2000 auto assign 1 to 144 timeouts interdigit 4 network-locale GB create cnf-files version-stamp Jan 01 2002 00:00:00 dialplan-pattern 1 5.. extension-length 3 max-conferences 16 gain -6 transfer-system full-consult !