Most likely the issue has to do with multiple things.
But first of all, if you want 4 digits, why not just have the gateway prepend what you need?
Second thing, make sure that the gateway can SEE the partition containing the CTI ports (the UCCX call control group) in its calling search space. If it can't, you will have issues like this. Make sure that the CTI Ports partition is in the CSS for the gateway...if not, add it and retest.
This is a fairly common problem that comes up when you have to have a separate call search space on a gateway to address digit manipulation requirements.
I've confirmed that the CSS for the gateway can see the partition for the CTI route point. So I think that's okay. I wish I were able to test with 4 digits to see if the issue was related to a calling privilege problem.
If I wanted to test by having the gateway prepend the leading digit is that configured under the Gateway > PRI > Calling Routing Information - Inbound - Prefix DN"? I've never done that before.
That's exactly how you do it. It will then prefix all the numbers it gets in over the PRI with whatever you put in there.
This is a dumb question, but since I can't see your environment....is this gateway and the UCCX server local to each other? UCCX cannot speak G729 by default, so if you're using a low bandwidth codec, you must have transcoders available for it so that it hits the server as G711.
In this case, then you can follow the advice Clifford provided (+5 Clifford). You can prefix the "9" so that your standard translations still apply. As an alternate approach, you could also create a separate CSS for your new gateway (the 3-digit deal) and create a new translation that applies the appropriate rules. Though, this may get hairy. Finally, you could actually ask your carriers to give you more digits. This would be my preferred route. Actually, my preference for any site in the NANP would be to provision circuits to extend 10-digits and then use translations to truncate. Then you can have one, uniform dial plan rule for calls originated externally. It would make life easier in the long run but building modularity directly into the design. Of course, at this point you may find the tactical approach of prefixing a DN at the ingress gateway easier to manage.
IntroductionCUCM Routing RulesDial String implementation PolicyCUCM Routing LogicSIP URI Call Routing Analysis+++ Case Study: 1 ++++++ Case Study: 2 +++Conclusion
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