Loopback Process Description - ADC Soneplex Broadband System Operation And Maintenance Manual

ADCP-61-471 • Issue 4 • June 2000 • Section 2: Operation and Maintenance
TAD-102
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Summary: The HDSL loopback process is similar to other T1 intelligent repeater methods. For
Version D and later HLX modules, the HLXC loopback is like an intelligent office repeater
loopback. The HLXR loopback and HRX loopback are like an intelligent inline T1 repeater
loopback.
The HDSL loopback operation is described by the diagram in
• Disarmed
• Armed
• Loopup
• Loopup/Time-Out Disable
DEACTIVATION
Inband and ESF data link sequences and time-out operations produce the state transitions. These
sequences and time-out values are:
• Arming sequence (inband or ESF data link)
• Activation sequence
• Deactivation sequence
• Disarming sequence (inband or ESF data link)
• Loopup time-out
• Arming time-out
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© 2000, ADC Telecommunications, Inc.

LOOPBACK PROCESS DESCRIPTION

DISARMED
STATE
ARM
ARMED
STATE
ACTIVATION
LOOPUP
STATE
LOOPUP/NO TIME-OUT
STATE
Figure 102-1. Loopback Operation State Diagram
Figure 102-1. The four states are:
ARMING
TIME-OUT
LOOPUP
DISARM
TIME-OUT
LOOPUP
TIME-OUT
DISABLE
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