[cisco-voip] External Masking

[Travis Llewellyn]

Hello all,
I am having a hard time trying to figure out the best way to accomplish
a problem I have.

We have several locations that use our local gateway for placing calls.
They also have a gateway of there own. We also have an series of
internal extension that are not DID.

When any of these phones place a call it shows up on caller ID with the
internal numbers.

I know how to use the ext phone number mask, sort of.
What I am inquiring about is there a way to say all calls that are place
by the numbers in the internal series show up at one number?

Ex

5700 - 5799 are internal numbers only - They can only dial out - No
internal call direct to them.

When one of them calls an external number it shows as ###-###-5700. This
is not a valid number and when people hit redial they get someone else.
What I would like is for all of the 5700 series to show up as just our
main number.

Can this be done globally or do I need to adjust each phone?

Thanks in advance

Travis Llewellyn
Network Administrator
Communication Federal Credit Union
travisll at comfedcu.org

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