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4
Replies

When dial number Ring Once then Fast Busy

umamon
Level 1
Level 1

I'm trying to troubleshoot why I'm getting a Busy when dial a my backup line phone number.  I have a VOIP telephone system and 2 backup analog lines connected to a FXO port 0 and 1 on a 2651XM router, I'm testing a backup line from my router.  So I ran the command csim start 94231294 ...This allows you to determine whether you can properly go offhook from the router to the PSTN, send digits, and complete a call to the destination phone.  So typed in my cell phone as the number and successfully received the call.  But when i try and call the number back.  The number rings Once and then I receive a FAST BUSY.  Do anyone have any idea why this would happen?  Here's a partial of my router configs..  Thanks in advance!

call rsvp-sync
!
voice-port 1/0/0
no comfort-noise
connection plar 1999
!
voice-port 1/0/1
no comfort-noise
connection plar 1999
!
voice-port 1/1/0
!        
voice-port 1/1/1
!
voice-port 50/0/158
!
voice-port 50/0/159
!
voice-port 50/0/160
!
voice-port 50/0/161
!
voice-port 50/0/162
!
voice-port 50/0/163
!
voice-port 50/0/164
!
voice-port 50/0/165
!
voice-port 50/0/166
!
voice-port 50/0/167
!
voice-port 50/0/168
!
voice-port 50/0/169
!
voice-port 50/0/170
!
voice-port 50/0/171
!
voice-port 50/0/172
!
voice-port 50/0/173
!
voice-port 50/0/174
!
voice-port 50/0/175
!
voice-port 50/0/176
!
voice-port 50/0/177
!
voice-port 50/0/178
!
voice-port 50/0/179
!        
voice-port 50/0/180
!
voice-port 50/0/181
!
voice-port 50/0/182
!
voice-port 50/0/183
!
voice-port 50/0/184
!
voice-port 50/0/185
!
voice-port 50/0/186
!
voice-port 50/0/187
!
voice-port 50/0/188
!
voice-port 50/0/189
!
voice-port 50/0/190
!
voice-port 50/0/191
!
voice-port 50/0/192
!
!
mgcp profile default
!
dial-peer cor custom
!
dial-peer voice 100 pots
destination-pattern 9T
port 1/0/0
!
dial-peer voice 101 pots
preference 1
destination-pattern 9T
port 1/0/1
!
dial-peer voice 911100 pots
destination-pattern 911
port 1/0/0
prefix 911
!
dial-peer voice 911101 pots
preference 1
destination-pattern 911
port 1/0/1
prefix 911
!
dial-peer voice 2000 voip
destination-pattern [1-8]...
session target ipv4:10.1.200.11
no vad
!
dial-peer voice 2001 voip
preference 1
destination-pattern [1-8]...
session target ipv4:10.1.200.10
no vad
!
dial-peer voice 9000 voip
destination-pattern 9T
session target ipv4:10.1.200.11
no vad
!
dial-peer voice 9001 voip
preference 1
destination-pattern 9T
session target ipv4:10.1.200.10
no vad
!
!
call-manager-fallback
ip source-address 192.168.96.1 port 2000
max-ephones 48
max-dn 192

1 Accepted Solution

Accepted Solutions

Brandon Buffin
VIP Alumni
VIP Alumni

Is 1999 a valid DN to receive the call? Are your voip dial peers using the correct codec (g.729 by default)? Correct codec configured in CUCM?

Hope this helps.

Brandon

View solution in original post

4 Replies 4

Brandon Buffin
VIP Alumni
VIP Alumni

Is 1999 a valid DN to receive the call? Are your voip dial peers using the correct codec (g.729 by default)? Correct codec configured in CUCM?

Hope this helps.

Brandon

Hi Brandon,  Thanks for your prompt response.  I'm so new to the voice side.  Can you explain what is a connection plar 1999 (is 1999 an extension DN (directory number?) and how can I check if is 1999 is capable of receive a call?  Would that be in the CUCM?

And what would be the correct codec to use?  Thanks so much... I'm also researching the cisco website... I do appreciate your help...

Hi Brandon,

Thanks for your help.  The problem is resolved now.

So what was the fix. I am having the same issue.

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