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cisco2610 connect to pbx by e&m without ringback

I have a cisco 2610 connected to 3660 by serial line

and run voip over it.

At first call from 3660 to 2610 is right,call from the other direction can also succeed but without ringback,2610'ios is 12.0.5-xk1.

Then I upgrade ios to 12.2.2T,now only call from 2610 to 3660 is ok,the other direction can't call any more!

3660'ios is 12.2.2T

e&m type 5 wink-start


Re: cisco2610 connect to pbx by e&m without ringback

Often times complex troubleshooting issues are best addressed in an interactive trouble-shooting session with one of our trained technical assistance engineers. While other forum users may be able to help, it’s often difficult to do so for this type of issue.

To utilize the resources at our Technical Assistance Center, please visit and to open a case with one of our TAC engineers, visit

If anyone else in the forum has some advice, please reply to this thread.

Thank you for posting.

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