Carrier Access SNMP manual Equipment Loopback Payload

Illustrations of Loops and Self-Tests

12.9.2 Equipment Loopback

Voice

Channels

DS-1 Network

V.35

Data

DS1 Equipment Loopback

Loop occurrs at DS1 (at framer), Check for

framing & errors. It metallically loops Tx to

Rx.

Commands: loop d1 equipment line

statistics ds1 1 current

loop none

Figure 12-3: Equipment Loopback

12.9.3 Equipment Loopback - Payload

Voice

Channels

DS-1 Network

V.35

Data

DS1 Equipment Loopback Payload Only

(Reframes T1)

Loop occurs at DS1 (location), only loops 192

bits & reframes the T1. Check for framing &

errors

Commands: loop v1 equipment line

statistics ds1 1 current

loop none

Figure 12-4: Equipment Loopback - Payload

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