3Com® VCX V7111 VoIP Gateway User Guide 113Dialing Plan NotationThe dialing plan notation applies, in addition to the four Manipulation tables, also to TelÆIPRouting table and to IPÆHunt Group Routing table.When entering a number in the destination and source Prefix columns, you can create anentry that represents multiple numbers using the following notation: [n-m] represents a range of numbers [n,m] represents multiple numbers. Note that this notation only supports single digitnumbers. x represents any single digit # (that terminates the number) represents the end of a number A single asterisk (*) represents any number For example: [5551200-5551300]# represents all numbers from 5551200 to 5551300 [2,3,4]xxx# represents four-digit numbers that start with 2, 3 or 4 54324 represents any number that starts with 54324 54324xx# represents a 7 digit number that starts with 54324 123[100-200]# represents all numbers from 123100 to 123200.The VoIP gateway matches the rules starting at the top of the table. For this reason, entermore specific rules above more generic rules. For example, if you enter 551 in entry 1 and55 in entry 2, the VoIP gateway applies rule 1 to numbers that starts with 551 and appliesrule 2 to numbers that start with 550, 552, 553, 554, 555, 556, 557, 558 and 559. However ifyou enter 55 in entry 1 and 551 in entry 2, the VoIP gateway applies rule 1 to all numbersthat start with 55 including numbers that start with 551.Mapping NPI/TON to Phone-ContextThe Phone-Context table is used to configure the mapping of NPI and TON to the Phone-Context SIP parameter. When a call is received from the ISDN, the NPI and TON arecompared against the table and the Phone-Context value is used in the outgoing SIP INVITEmessage. The same mapping occurs when an INVITE with a Phone-Context attribute isreceived. The Phone-Context parameter appears in the standard SIP headers where aphone number is used (Request-URI, To, From, Diversion).You can also configure the Phone Context table using the ini file parameter PhoneContext(see Protocol Management ini File Parameters).
