asterisk*CLI> sip show channels
Peer             User/ANR    Call ID          Format           Hold     Last Message    Expiry
64.61.93.190     ocY97PJM89  198c3f7d62d2e53  0x0 (nothing)    No                                 
67.108.9.165     ocY97PJM89  48de9c726d1482b  0x0 (nothing)    No                                 
64.61.93.190     ocY97PJM89  68a6553833bee4a  0x4 (ulaw)       No       Rx: INVITE                
192.168.0.30     line3       71cca8cf-7fb1ce  0x4 (ulaw)       No       Rx: INVITE                
4 active SIP dialogs

asterisk*CLI> sip show history 71cca8cf-7fb1ce
asterisk*CLI> 
  * SIP Call
1. Rx              INVITE / 101 INVITE / sip:8000@asterisk.crosscomm.net
2. AuthChal        Auth challenge sent for  - nc 0
3. TxRespRel       SIP/2.0 / 101 INVITE - 401 Unauthorized
4. SchedDestroy    6400 ms
5. Rx              ACK / 101 ACK / sip:8000@asterisk.crosscomm.net
6. Rx              INVITE / 102 INVITE / sip:8000@asterisk.crosscomm.net
7. CancelDestroy   
8. Invite          New call: 71cca8cf-7fb1ceda@192.168.0.30
9. AuthOK          Auth challenge succesful for line3
10. NewChan         Channel SIP/line3-10346de8 - from 71cca8cf-7fb1ceda@192.168.0.3
11. TxResp          SIP/2.0 / 102 INVITE - 100 Trying
12. TxResp          SIP/2.0 / 102 INVITE - 183 Session Progress
[2009-09-28 16:05:35] 

asterisk*CLI> sip show history 68a6553833bee4a
asterisk*CLI> 
  * SIP Call
1. Rx              INVITE / 102 INVITE / sip:19192460171@64.105.202.244:5060
2. NewChan         Channel SIP/VoicePulse-Primary-Brendan-10345ec8 - from 68a65538
3. TxResp          SIP/2.0 / 102 INVITE - 100 Trying
4. TxResp          SIP/2.0 / 102 INVITE - 183 Session Progress
asterisk*CLI> sip show history 48de9c726d1482b
No such SIP Call ID starting with '48de9c726d1482b'