RAD Data comm TDMoIP Gateway IPmux-16 - Manual (Page 83)

IPmux-16 Installation and Operation Manual Chapter 4 Troubleshooting and Diagnostics
Diagnostic Tests 4-5
PBX
AIS IPmux-16
Internal Loop
Figure 4-2. Internal Loop
T1 FDL Support
The following FDL commands are supported:
• Line Loopback (LLB): external loop
• Line Loopback Release: normal state
T1 PRM Support
The T1 module supports PRM message transmission according to the ANSI T1.403
protocol. Messages are transmitted every second.