04-13-2016 08:34 AM - edited 03-13-2019 09:26 PM
Need to configure a ISR G4 4331 device with a T1 PRI Interface..The interface must supply clock to a legacy PBX...Old command in the 28XX/38XX-29XX/39XX under controller was "clock source internal"
Ill be emulating the NETWORK side in this configuration.
Now with the G4, clocking has changed significantly...I can not find any DOC on this....
What commands do i use to configure internal clocking on a MFT T1 PRI interface?
Update: 4-14-16
I found the solution in the document below.
Configuring T1/E1 for Voice Step 10...Configure the controller t1 as "clock source network"
04-14-2016 06:23 AM
Hi Thomas,
you refer the link
http://www.cisco.com/c/en/us/support/docs/routers/4000-series-integrated-services-routers/118792-config-isr-00.html
https://supportforums.cisco.com/discussion/12508721/isr-4451-voice-configuration
regds,
aman
06-15-2016 07:06 AM
Can you share your relevant config? I can't get a ISR4k /w E1 to run as a clock master for a legacy PBX.. I need to provide the clock.
06-15-2016 07:29 AM
Mine was a T1, but should'nt make a difference i suspect
card type t1 X X
!
isdn switch-type primary-ni
!
controller T1 0/X/0 ## Only for PRI to PBX interface
framing esf
clock source network
linecode b8zs
pri-group timeslots 1-24
!
!
interface Serial0/X/0:23 ##For PRI to PBX only!
no ip address
encapsulation hdlc
isdn switch-type primary-ni
isdn protocol-emulate network
isdn incoming-voice voice
isdn supp-service name calling
no cdp enable
!
06-22-2016 06:12 AM
Thanks, what does your config looks like for:
sh controllers t1 0/x/0
sh network-clocks
sh network-clocks synchronization
sh run | s network-clock
06-22-2016 06:16 AM
My config posted above is what worked for me
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