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300-815 · Question #95

Drag and Drop Question Drag and Drop the commands from the bottom to the blanks in the code to implement a translation rule to allow only 11 digits to be received over a SIP trunk to a SIP provider. T

This question tests the ability to configure a Cisco CUBE voice translation rule that strips the E.164 '+' prefix and enforces an 11-digit format before forwarding calls to an upstream SIP provider. It requires knowledge of Cisco IOS voice translation-rule syntax and regular expr

Cisco Unified Border Element

Question

Drag and Drop Question Drag and Drop the commands from the bottom to the blanks in the code to implement a translation rule to allow only 11 digits to be received over a SIP trunk to a SIP provider. The Cisco UCM is currently sending calls to the Cisco Unified Border Element in E.164 format. Not all options are used.

Explanation

This question tests the ability to configure a Cisco CUBE voice translation rule that strips the E.164 '+' prefix and enforces an 11-digit format before forwarding calls to an upstream SIP provider. It requires knowledge of Cisco IOS voice translation-rule syntax and regular expression pattern matching.

Approach. Since Cisco UCM sends calls in E.164 format (e.g., +14085551234), the CUBE must strip the leading '+' and pass only the 11-digit NANP number (14085551234) to the SIP provider. The correct implementation uses 'voice translation-rule' with a regex 'rule' that matches '^+([0-9]{11})$' and replaces it with '\1' (the captured group). This profile is then bound to the outbound SIP dial-peer using 'translation-profile outgoing <profile-name>', ensuring only valid 11-digit E.164 bodies reach the provider. The key commands are: 'voice translation-rule <#>', 'rule 1 /^+([0-9]{11})$/ /\1/', 'voice translation-profile <name>', 'translate called <rule#>', and dial-peer assignment with 'translation-profile outgoing'.

Concept tested. Cisco CUBE (Cisco Unified Border Element) voice translation-rule configuration - specifically using IOS regex-based 'rule' statements inside a 'voice translation-rule' block to normalize E.164 SIP URIs (strip leading '+') and enforce digit-length constraints (11 digits) for SIP trunk interoperability with external providers.

Reference. Cisco CUBE Configuration Guide - Voice Translation Rules and Profiles; CCNP Collaboration / Cisco Unified Communications (300-810 CLICA or 300-815 CLACCM exam objectives covering digit manipulation on CUBE

Topics

#Cisco CUBE#Voice Translation Rules#SIP Trunking#Dial Plan Normalization

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