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E1 and BRI on 1760?

peter.rowe
Level 1
Level 1

HI There,

running a 1760 CCME to PSTN via Bri (IOS 12.3(14)T5)

Just got an E1 VIC to do a trunk to a mitel PBX (3300) using QSIG

However I can seem to configure the timeslots, it seems to require the

"tdm clock e1 0/0 both export line" but when entered I get "% exceed

the max 1 clock source limit" when I issue the commands.

Is this because I have "TDM clock bri-auto" already?

How do I get both working?

THANKS!!!

Peter.

2 Replies 2

ebreniz
Level 6
Level 6

Only one clock source can be used to provide clocking for the router. If the clock is not configured, the port will not communicate with the network.

http://www.cisco.com/univercd/cc/td/doc/product/access/acs_mod/1700/1700cnts/tdmdesc.htm

Thanks,

I got it working eventually - the method differs from all the configuration examples & docs I've seen. If anyone is interested you need the global command:-

tdm clock E1 0/0 both import onboard internal

There is no 'clock source' command on the e1 controller as normal.