Table G.7. Accounting-Interim
| AVP | No. | Usage |
| Called-Station-Id | 30 | Called number as received on L2TP |
| Calling-Station-Id | 31 | Calling number as received on L2TP |
| Acct-Status-Type | 40 | 1 Start |
| Acct-Session-Id | 44 | Unique ID for session |
| Acct-Event-Timestamp | 55 | Time call answered |
| NAS-Identifier | 32 | Configured hostname of FireBrick |
| NAS-IP-Address | 4 | Far end IPv4 address for SIP if using IPv4 |
| NAS-IPv6-Address | 95 | Far end IPv6 address for SIP if using IPv6 |
| NAS-Port | 5 | Far end UDP port for SIP |
Note
If the call is connected to another call leg then a second Acct-Session-Id is included with details of the linked call leg.
