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VoIP - Caller Display: Difference between revisions
Some examples of SIP From headers and SIN 227 messages
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(Some examples of SIP From headers and SIN 227 messages) |
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==Caller's Number and Name==
The protocol used (SIP) to deliver phone calls to you has fields which provide the caller's number and the caller's "name" - although the name will probably not be received for calls from the PSTN. Where the name field received is the same as the number field, we will send to you the name field set to the "pretty format" of the caller's number - e.g. "020
Your local hardware will display either the number, the name, or both (or neither if it has no display...). If you have an Analogue Telephone Adaptor set to sending caller display to your analogue phone(s) using BT's SIN 227 standard, then this standard also has fields for caller's number and caller's name and those fields will be populated.
For some examples, a SIP From header could be:
"07973 xxxxxx" <sip:07973xxxxxx@voiceless.aa.net.uk>;tag=2018122611233000003
becoming (through a Grandstream ATA) the SIN 227 message:
NMBR = 07973xxxxxx DATE = 1226 TIME = 1123 NAME = 07973 xxxxxx
An anonymous call would have a SIP From header like:
"Anonymous" <sip:Anonymous@voiceless.aa.net.uk>;tag=2018122611244000001
becoming
NMBR = O DATE = 1226 TIME = 1124 NAME = Anonymous
and a SIP URI call could have a SIP From header of:
"30164xxx" <sip:%3f30164xxx@voiceless.aa.net.uk>;tag=2018122611314200003
becoming
NMBR = O DATE = 1226 TIME = 1131 NAME = 30164xxx
(In the SIN 227 messages, a NMBR of 'O' means 'Unavailable' and 'P' means 'Withheld').
==Tag feature==
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