Essentials Guide ENUM Based Oracle Communications Unified Session Manager SIP User Parts - RFC 3261 Character Set Support Alpha-Numeric Name Support Alpha-Numeric Name Support To enable to use of alpha characters in SIP message user parts for a given sip-registrar: From superuser mode, use the following command sequence to access sip-registrar element. ORACLE# configure terminal ORACLE(configure)# session-router ORACLE(session-router)# enum-config ORACLE(enum-config)# select Select the enum-config you want to configure. Specify alpha-numeric name support for this enum-config and specify the number of DNS zones in your deployment. ORACLE(enum-config)# alpha-numeric-user-support enabled ORACLE(enum-config)# done Note that the parameter alpha-numeric-user-support is RTC supported.