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New Member

1760 tdm clock configuration problem

I need

Router(config)# tdm clock E1 0/0 both export line

Router(config)# tdm clock E1 0/1 both import E1 0/0 line

And I cannot enter command {tdm clock E1 0/1 both import E1 0/0 line}. Error message {% E1 data switch not available for this configuration}. Why?

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4 REPLIES
Silver

Re: 1760 tdm clock configuration problem

check out the following conditions before configuring TDM clock:

* BRI interfaces should be shut down before using the no tdm clock command for BRI.

* The configuration for a ds0/pri/channel/tdm group on a T1/E1 must be removed before deleting the TDM clock configuration for T1/E1.

* Any residual or default TDM clock configuration must be deleted before creating a new TDM clock configuration.

* If an export port is configured, the line protocol must be up before configuring any import ports.

* On a Cisco 1751 or Cisco 1760 router, if one port is configured as export, all other ports must be configured as imports.

* An export port clock can be turned off only after all the import ports (including BRI-auto ports) are turned off.

* The configured TDM clock and the status of the running TDM clock might be different, depending on the line conditions and connections.

New Member

Re: 1760 tdm clock configuration problem

I have exactly the same problem on a 1760 running c1700-adventerprisek9-mz.124-4.XC.bin with a 2MFT-T1 in slot 0 or 1. In "Clock Configuration for Cisco 1751/1760 Routers", page 12 it shows the power-up default TDM clock as:

tdm clock t1 0/0 both export line

tdm clock t1 0/1 both import t1 0/0 internal

On my router comes up as:

tdm clock t1 0/0 both export line

tdm clock t1 0/1 voice import t1 0/0 internal

and can't change it either, just like the original poster said. This issue prevents setting up pri groups on 0/1. I even searched bug database... Nothing. Anybody got around?

Thank you!

New Member

Re: 1760 tdm clock configuration problem

I upgraded 1760 to IOS c1700-adventerprisek9-mz.124-7.bin and the problem went away.

New Member

Re: 1760 tdm clock configuration problem

Thank you! But I have only 96MB and 128MB - minimal requirements for this version :(

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