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SFOM-HS2
4. Troubleshooting
4.1 Diagnostic Loopback Tests
You can configure the SFOM-HS2 to perform either
of two test loops. V.54 Loop 3 (ANA, local analog
loopback) tests the local SFOM-HS2 by routing the
transmit signal the unit gets from the attached device
back to that device through its receiver (see Figure 4-1
below).
Figure 4-1. Local analog loopback (ANA).
V.54 Loop 2 (REM, remote digital loopback) tests
the local SFOM-HS2, the line, and the remote
SFOM-HS2 (see Figure 4-2 below).
Figure 4-2. Remote digital loopback (REM).
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