User's Manual

AN-30e
user manual
70-00035-01 Proprietary Redline Communications © 2004 November 2004
Page 55 of 104
The selections for T1 are:
D4: The D4/Superframe format groups twelve T1 frames together and utilizes the
twelve T1 framing bits to provide a repetitive pattern that allows other equipment
on T1 line to lock onto the framing pattern.
ESF: Extended SuperFrame framing format groups twenty-four T1 frames
together. Allows optimization for framing on the T1 line. Adds additional features
of CRC, FDL, and frame synchronization (like D4).
unframed: The entire T1 signal is forwarded without modification.
The selections for E1 are:
FAS: Framing scheme where timeslot zero of every even frame is reserved for the
Frame Alignment Signal (FAS) code.
CRC4: Cyclic Redundancy Check.
unframed: The entire E1 signal is forwarded without modification.
Loopback: Select the testing mode for this port.
Disabled: Serial interface is in normal operating mode
Local: Equivalent to a physical RJ-48 loopback.
Framer
Line 1
Line 2
Line 3
Line 4
ETH
AN30
Wireless
Figure 29: TDM Loopback: Local Mode
Remote: Physical loopback at the analog part of a E1 line.
Framer
Line 1
Line 2
Line 3
Line 4
ETH
AN30
Wireless
Figure 30: TDM Loopback: Subscriber Mode