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9-30 61200290L1-1G
Section 9, Transaction Language 1 (TL1) MX2800 M13 Multiplexer User Manual
TL1 Loopback Commands
The OPR-LPBK and RLS-LPBK commands are provided as an alternative to ED commands to perform
loopbacks through TL1. The general format for these commands is as follows:
OPR-LPBK-{T1|T2|T3}:<tid>:<aid>:<ctag>::<locn>,,,<lpbktype>;
RLS-LPBK-{T1|T2|T3}:<tid>:<aid>:<ctag>::<locn>,,,<lpbktype>;
Table 9-10 describes each of the DS3 loopbacks that can be initiated or released with these commands.
1. The value of xy may be 00 through 03.
Table 9-11 describes each of the DS2 loopbacks that can be initiated or released with these commands.
* The value of xy may be 01 through 07, corresponding to the desired DS2 channel.
Table 9-10. DS3 TL1 Loopback Commands
Verb MOD2
<aid>
1
<locn> <lpbktype> Description
OPR T3 3xy NEND LINE Initiates the DS3 Line Loopback
RLS T3 3xy NEND LINE Releases the DS3 Line Loopback
OPR T3 3xy NEND DIGLPBK Initiates the DS3 Digital Loopback
RLS T3 3xy NEND DIGLPBK Releases the DS3 Digital Loopback
OPR T3 3xy NEND TERMINAL Initiates the DS3 Network Loopback
RLS T3 3xy NEND TERMINAL Releases the DS3 Network Loopback
OPR T3 3xy FEND LINE Initiates the DS3 Remote Loopback
RLS T3 3xy FEND LINE Releases the DS3 Remote LoopbacK
OPR T3 3xy FEND ALLT1 Initiates the DS3 All T1/E1 Loopback
RLS T3 3xy FEND ALLT1 Releases the DS3 All T1/E1 Loopback
RLS T3 3xy Releases any active DS3 Loopback
Table 9-11. DS2 TL1 Loopback Commands
Verb MOD2
<aid>
*
<locn> <lpbktype> Description
OPR T2 2xy NEND NETWORK Initiates the DS2 Network Loopback
RLS T2 2xy NEND NETWORK Releases the DS2 Network Loopback
RLS T2 2xy Releases any active DS2 Loopback