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Analog Dial In with Callback disconnects previous connection

On an Cisco 3620 we installed an PRI Dial In Interface an we also installed a 30 -port Digital Modem Module.

The router handles the calls with and without callback.

With direct Dial in everything works well, also with ISDN calls with dialback.

Direct Analog Dial in works also well, but if we make a analog call in with callback the previous connection fails and the new connection takes place.

Any suggestion ????


Re: Analog Dial In with Callback disconnects previous connection

Since there has been no response to your post, it appears to be either too complex or too rare an issue for other forum members to assist you. If you don't get a suitable response to your post, you may wish to review our resources at the online Technical Assistance Center ( or speak with a TAC engineer. You can open a TAC case online at

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