Calls from IP Endpoints

The Oracle® Enterprise Session Border Controller uses the following number normalization rules:

• North American Numbering Plan (NANP) calls: where a number with the format 1NPANXXXXXX is received, the Oracle® Enterprise Session Border Controller adds a plus sign (+) as a prefix to the NANP number. The Oracle® Enterprise Session Border Controller also adds the string ;user=phone after the host IP address in the SIP URI. For example:

  sip:+1NPANXXXXXX@ipaddr;user=phone

• International NWZ1 calls: Oracle® Enterprise Session Border Controller receives an international call with the format 011CCNN. The Oracle® Enterprise Session Border Controller deletes the 011 prefix and adds a plus sign (+) as a prefix to CC+NN; and also adds the string ;user=phone after the host IP address in the SIP URI. For example:

  sip:+CCNN@ipaddr;user=phone

• Private number calls: when a private number with the format nxxxx (where n=2 through 9) is received, no number normalization is applied by the Oracle® Enterprise Session Border Controller.
• Calls to numbers such as N11, 0-, 0+, 00-, and 01+: the Oracle® Enterprise Session Border Controller adds ;phone-context=+1 after the number and also adds the string ;user=phone after the host IP address in the SIP URI. For example:

  sip:N11;phone-context=+1@ipaddr;user=phone
  sip:01CCNN;phone-context=+1@ipaddr;user=phone

• Calls with numbers that are already normalized are not modified by the Oracle® Enterprise Session Border Controller.