PRI Simulation

[ifoam]

I'm working on my CCVP and trying to think of way to simulate a PRI.

I want experience configuring PRI at the port and in cucm so i can try building an environment from the ground up. Does anyone have any suggestions on how to get this working?

 

[DallasBPF]

just get a loopback plug and put in that router port... only other option would be to get an Adtran with PRI options.

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Dallas, Texas
Telecommunications Tech
CCVP, CCNA, Net+

CCNP in the works

 

[ifoam]

I was thinking about that.

If i get a layout like this:

router -> router <- router

with cross over PRI's, can I fully configure them to simulate a pstn?

 

[madwok]

If you do the voice, you would need something line v console ISDN PRI simulator to pass the DNIS .

 

[azaghul33]

I'm also working through the CCVP here, completed CCNA Voice before they changed the rules, and now part way through CVoice.

I haven't done the 3 router solution yet with a router simulating the PSTN cloud. But have connected 2 Cisco 1760's via E1 PRI successfully and placed calls between them, as proof of concept. So expanding the solution shouldn't pose a problem (in theory anyway).

Connect the routers via E1/T1 cross over cables (I got mine on eBay)
Configure your "PSTN" router to supply clock and under the D channel/serial interface add the command 'isdn protocol-emulate network' and 'isdn incoming-voice voice'
Configure your "SITE" router normally to receive clock and under the D channel/serial interface add the command 'isdn protocol-emulate user' and 'isdn incoming-voice voice'
Configure both "PSTN" and "SITE" routers to have an inbound dial-peer with 'incoming called-number .' and 'direct-inward-dial'

Hopefully this will give you a start in the right direction.

Cheers!
Dave