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12-8 9/24/01
12.9.4 DS-1 Network Loopback
Figure 12-5: DS-1 Network Loopback
12.9.5 : DS-1 Network Loopback - Payload
Figure 12-6: DS-1 Network Loopback - Payload
Voice
Channels
V.35
Data
DS-1 Network
DS-1 Network Loop
Loops at DS-1 (at framer), have DS-1
Vendor check framing/errors
Commands:
loop d1 network line
loop none
Voice
Channels
V.35
Data
DS-1 Network
DS-1 Network Loop
Payload Only - Reframes T1
Loops at DS-1 (at framer), only loops 192 bits
and reframes the T1, corrects BPV &
recomputes CRC, have DS-1 Vendor check
framing/errors
Commands:
loop d1 network payload
loop none