RAD Data comm Modular Access Device with Integrated Router, E1/T1 operation manual

FCD-IPMInstallation and Operation Manual	Chapter 5 Setup Menu
FCD-IPM (E1 with Sub Link)
Router/Bridge	Link1
	E1
	Service

Sub Link E1

Interface

E1 Service

or PABX

Analog

Front End

Loopback

Figure 5-60. Remote Analog Loopback for E1 and Sub E1 Links

•Main Link Local Analog Loopback – In this mode, the data transmitted from FCD-IPM to the E1 line is sent back to the receive path, instead of the data received from the E1 line. The loopback is shown in Figure 5-61.

FCD-IPM

E1 Interface

E1

Service

Loopback

Figure 5-61. Local Analog Loopback

•Sublink Local Analog Loopback (for FCD-IPM with a Sublink) – In this mode the data transmitted from FCD-IPM to the sub E1 line is sent back to the receive path instead of the received data from the sub E1 line. The loopback is shown in Figure 5-62.

Interface Parameters Menu 5-55