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MX2800 M13 Multiplexer User Manual Transaction Language 1 (TL1), Section 9
61200290L1-1G 9-31
Table 9-12 describes each of the DS1 loopbacks that can be initiated or released with DS1 TL1 loopback
commands.
* The value of xy may be 01 through 28, corresponding to the desired DS1 channel.
Table 9-12. DS1 TL1 Loopback Commands
Verb MOD2
<aid>
*
<locn> <lpbktype> Description
OPR T1 1xy NEND NETWORK Initiates the DS1 Tributary Loopback
RLS T1 1xy NEND NETWORK Releases the DS1 Tributary Loopback
OPR T1 1xy NEND TERMINAL Initiates the DS1 Analog Loopback
RLS T1 1xy NEND TERMINAL Releases the DS1 Analog Loopback
OPR T1 1xy NEND DIGNET Initiates the DS1 Digital Line/Net Loopback
RLS T1 1xy NEND DIGNET Releases the DS1 Digital Line/Net
Loopback
OPR T1 1xy NEND CODEC Initiates the DS1 Codec Line/Net Loopback
RLS T1 1xy NEND CODEC Releases the DS1 Codec Line/Net Loopback
OPR T1 1xy FEND DS1FEAC Initiates the DS1 Remote Loopback
RLS T1 1xy FEND DS1FEAC Releases the DS1 Remote Loopback
OPR T1 1xy FEND CSULPBK Initiates the DS1 CSU Loopback
RLS T1 1xy FEND CSULPBK Releases the DS1 CSU Loopback
OPR T1 1xy FEND CSUBERT Initiates the DS1 CSU Loopback w/BERT
RLS T1 1xy FEND CSUBERT Releases the DS1 CSU Loopback w/BERT
RLS Releases any active DS1 Loopback