Digital trunk

When your office subscribe to a digital trunk service from the telco, you are either using a T1 or an E1 connection. Or if you have 2 PBXs interconnected using a digital trunk, the digital trunk logging card can also be used to record conversations on this trunk.

Due to the advantages of digital trunk technology over the older analog trunk technology, recording on a digital trunk also allows for these advantages to be available for the logger.

For digital trunks, other than caller ID service, there is also DDI (Direct Dialing Inward) service. Both information can be captured and used in the voice logger to help you locate a recording faster than before. However, without subscribing to DDI service, the logger would not be able to identify who in your office answered or made the call. (There is a work-around using CDR from the PBX to help the audio recorder identify which call is made by which extension.)

Frankly speaking, we would not recommend you to try install a digital trunk logger by yourself if you have no previous experience. This is because when you have a problem, it can be quite difficult and time consuming for someone un-initiated to do troubleshooting, unlike for the case of analog or digital extension.

But if you have knowledge of digital trunks, then it is quite straight forward because for an E1 or T1 trunk, only 1 pair of tapping cable is required.