How To Add a Prefix Digit to an Outbound Call

[dwalsh]

Hello,

I have to deliver a 9 to my PSTN for access to the PSTN. How can I prepend this to the outgoing dialed number?

In other words, when a user picks up the phone, they dial 9 to get secondary dialtone and to indicate an "offNet" call. When they dial the number, they get the message "Your call can not be dialed ... yadda yadda." However, if they dial 9 and then 9 <telephone number>, it works.

I'm familiar with the NANP and the 9.@ dial pattern in CCM, but not how it works in CME.

Any thoughts on this?

Thanks,

Dave

[Chris Deren]

On the outbound POTS dial-peer add "prefix 9".

I assume your pots dial-peer is 9! or 9.........., add "no digit-strip" under the dial-peer, this way the already dialed 9 will not be stripped.

Another option is to use translation rules.

Chris

Don't forget to rate all posts!

[dwalsh]

Hi Chris,

Thanks for the tip. I did neglect to mention one thing. The CME is using an external gateway, so the dial-peer I have is a VOIP peer to send it to the right gateway. It doesn't seem to have the ability to add a "prefix 9" command on a VOIP dial-peer.

Also, the external gateway is being used by a production CCM system. I'm trying to stay away from messing with its configuration, so what I've done is to set up a dial-peer on the gateway that directs anything with a dest pattern of 8T to a specific port. Now all I have to do is to find a way to prefix an 8 on all calls from the CME phones without the users having to type it in.

Is there any way to do this without having to do a translation rule?

Thanks,

Dave

[Chris Deren · Accepted solution]

The easiest way would be to modify it on the CCM, but since that is not an option I think translation rule would be your best option, you are correct prefix is only available on pots dial-peers.

Chris

[dwalsh]

Hey Chris,

Thanks a bunch for your help. I did manage to get the translation rule figured out and it works!! Only other question is this:

Is there a way to prevent the "translated" number from showing on the IP phone display? In other words, how can I keep what the user dialed and hide what's being translated? It might just be confusing to a user if he/she were to see an "8" pop up for some unknown reason.

Thanks,

Dave

[Chris Deren]

Use "clid network-number" under the dial-peer.

http://www.cisco.com/en/US/products/ps6350/products_command_reference_chapter09186a008041ef72.html

Chris

Don't forget to rate all posts!

[dwalsh]

Hi Chris,

I might have not been clear. Permit me to clarify:

It's not the ID that's seen by the called party that I'm concerned about. For now, I'm just talking about what the calling party sees on their phone.

For example, IP phone user picks up his handset and dials 95551212. If he's watching the phone, he's going to see the following after the translation rule is implemented: 895551212. That leading eight might be confusing to him.

I think the CLID thing is for what's delivered over the PSTN, isn't it?

Thanks,

Dave

[Chris Deren]

CLID is the caller id display, which in your case when the call goes out PSTN via CCM will be correct anyway. I don't know of a way not to display the 8 to the caller.

Chris

[dwalsh]

OK, thanks for your help Chris.

Dave