Hi,
are you using MGCP with the CM? If so, all settings must be done on CM and not on router.
If using H.323, you can configure either in CM or router. For router, you can have:
voice translation-profile makedid
translate called 100
voice translation-rule 100
rule 1 // /1/
voice-port x/y/z:15 (or 23)
translation-profile incoming makedir
You will then need to configure the DP pointing to CM so that the destination pattern is 1...
Hope this helps, please rate post if it does!