The SMDR records include fields (31 to 34) that identifying the calling and called IP Office systems. These are useful for calls between systems in an IP Office network. This still requires each system in the network to be configured to output its own SMDR records..

In this example, 806 on the 1st IP Office system (192.168.0.182) makes an internal call to 706 on the 2nd IP Office system (192.168.0.180). Both systems output their own SMDR record for the same call.

Record from 1st IP Office system with the calling extension 806

2020/03/06 10:33:27,00:00:15,8,806,I,706,706,,1,1000018,0,E806,Extn806,E706,Extn706,7,0,,,,,,,,,,,,,,192.168.0.182,1049,192.168.0.180,1087,
2020/03/06 10:33:56,0

Record from 2nd IP Office system with the called extension 706

2020/03/06 10:33:27,00:00:22,8,806,O,706,706,,1,1000004,0,E806,Extn806,E706,Extn706,0,0,,,,,,,,,,,,,,192.168.0.182,1049,192.168.0.180,1087,
2020/03/06 10:33:56,0