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Attention: The Cisco Support Community site will be in read only mode on Dec14, 2017 from 12:01am PST to 11:30am for standard maintenance. Sorry for the inconvenience.

New Member

Need configurations for VOIP Project.....

Dear all,

            I need configuration guidelines for the topology attached.I am having cisco 3800 router and L3 switch with me.I have some IP phones connected to it.I wanted to make calls locally with 4 digit dialing and also should be able to make PSTN calls directly by the individual users.Please check the file attached...and do the needful thank you.....

Please mail me the configuration guidelines for the individual devices and requirements in detail to

Thank you

Cisco Employee

Re: Need configurations for VOIP Project.....

Yes that will work.  You need to configure CME on the ISR, and then have a dial-peer pointing out to the POTS lines for PSTN calls.  You will need DSPs in the router to terminate the POTS line(s).

Take a look at the 'Communications Manager Express Administration Guide' for sample configuration on a basic CME setup to get this working.

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