User`s guide

AT Commands
5-36 Modem 3600
Dial / Leased Line &L
&L selects line operation as required:
Dial Backup *DB
Return to Leased Line from Dial Backup *LB
During dial backup operation, *LB makes the modem return to leased
line operation.
During leased line operation with forced answer enabled, *LB makes
the modem wait for a dial backup call.
Manual Dial Backup *LD
*LD dials the autodial number if the modem is in originate mode with
manual dial backup selected. Available in leased line operation only.
Answer / Originate *OR
*OR forces the modem to answer or originate mode. This option is used
during 2- and 4-wire leased line operation with error correction and/or
dial backup.
Leased Line Transmit Level *TLn
Command Operation
&L Dial (switched)
&L1 Leased (private) 2-wire
&L2 Leased (private) 4-wire
Command Operation
*DB Manual dial backup operation
*DB1 Automatic dial backup operation
Command Operation
*OR Force originate
*OR1 Force answer
Command Operation
*TLn Sets leased line TX level to n where n is a number 0
through 30 corresponding to a TX level of 0 to -30
dBm