McDewey

Profiles were added to Cisco IOS in 12.0(7)XR1. A translation-rule is applied to voice translation-profiles which are then applied to a dial-peer or voice-port. Translation-rules contain a match input and a modification output. Along with the match input on the number there is a match and modify input for the ISDN plan and type. The combination of match number string, plan, and type is considered a match. This means all match inputs defined must be true for the translation to take place. Translation-rules have the ability to change Called, Calling, redirect-called, redirect-target, and callback- number in ISDN, SIP, and H323 signaling protocols. Translation-rules match based on a top-down search, so order of the rules is of utmost importance. If a match is found in a higher rule, the gateway immediately stops searching and processes the translation. Translation rules cannot change non-numeric sip headers such as testuser@10.10.10.10. For this manipulation, utilize a SIP profile. Transition-rules can be used to block calls on Cisco Gateways. Translation-Profile Selection Preference Incoming voice translation-profile on the voice-port 1. Incoming voice translation-profile on Trunk Group applied to Serial Interface 2. Incoming voice translation-profile on the inbound dial-peer 3. Incoming voice translation-profile defined via voice service pots 4. Incoming voice translation-profile defined via global 'voip-incoming translation-profile' 5. Outbound voice translation-profile defined via voice service pots 6. Outbound voice translation-profile or translate-outgoing on the outbound dial-peer 7. Outbound voice translation-profile on Trunk Group applied to Serial Interface 8. Outbound voice translation-profile on the voice-port 9. In addition to dial-peer regex and wilcards translation-rules have their own regex characters. Character Definition * When used in translation-rules this is regex for 0 or more of the previous character. To match a literal * use an escape character: *
Commonly used to escape sets in translation rule ( ) & Ampersand is used to bring over anything matched in the initial match set for the modification set ( ) Items wrapped in parenthesis are considered a set. ^ Defines the explicit start of a string. Unlike dial-peers translation-rules do not define the start of the string. This means defining a string without a ^ can possible match anything in the input string which can lead to unwanted translations in the middle of a number.