Cisco 2600/2600XM AND 3600 SERIES 8 PORT T1 ATM MODULE WITH IMA Guide De Spécification

• Remote loopback—The clock and data recovered from the

line inputs are routed back to the line outputs. This mode

is customer enabled.

• Network loopback—The clock and data recovered from

the line inputs are routed back to the line outputs. This

mode detects a loopback data pattern from the input data

stream.

• Dual loopback—Two dual loopback modes supported

– Payload loopback—Will loopback the data stream from

the receiver station back to the transmitter section.
The looped data will pass the receiver, transmitter, and
framers.

– Line loopback—Will loopback the data stream from the

receiver section back to the transmitter section (not
including the framers).

• RJ-45 external loopback—An external RJ-45 loopback

plug can be used to loopback clocks and data.