...
Each technology has at least 1 Information Element which contains the caller id. Since SIP is a rather loosely defined standard. It has several recommendations and drafts which define where caller ids can be present.
| technology | caller id options |
|---|---|
| SIP | From:, P-Preferred-Identity:, P-Asserted-Identity:, Remote-Party-Id: |
| ISDN | OAD, OAD2, QSIG Name |
| Analog | Caller ID, Calling Name |
| GSM | Caller ID |
beroFix has also the ability to match dialplan rules against the caller id. It uses the Source in the dialplan for matching and the NewSource to generate the caller id for the outbound technology.
...