Starting a DN range with *1XXXXX

[Louis-Philippe Descamps]

Hi,

we are planning to connect our cucm in europe with the cucm in USA.

We need to look at new dial plan.

US suggests to start *1XXXXX to dial internally from EU to USA. eg, *198765

We suggests to start 82XXXXX to dial internally from EU to USA. eg, 82198765

anyone got experience on this?

I think starting with * will confuse everything as it looks more like wildcard etc

thanks

[paolo bevilacqua]

If you are responsible for the system in Europe, you can decide by yourself, and the prefix will be removed when the call is made.

[derek.andrew]

The * will create problems if you have analogue phones, or fax machines, connected to vg224 or ata186 gateways.

If you really want to link the world together, you should read the SRND for CUCM. It has all kinds of good ideas.

D

[Chris Deren · Accepted solution]

Any digits including * are acceptable, and there are no issues dialing * from analog devices.

Enterprise dial plan design requires analysis of all locations, DID ranges at each site, system extensions on all clusters, etc, etc.  The industry trend and Cisco's best practices now days are to use +e164 dial plan for all external and internal dialing as nicely described in SRND with some caveats. I have done may global enterprise dial plan designs and implementations and there is no one fits all, especially for existing systems where you may not have the luxury of changing extensions. So, my advise would be to either collaborate with every region and see if you can develop enterprise standard dial plan, or adapt prefix on each side that suits that environment.

HTH,

Chris

[Louis-Philippe Descamps]

thank you Chris, the e.164 is good dial plan