Pass-Thru - AT&T MERLIN LEGEND Release 3.0 System Programming And Maintenance Manual

Using SPM

Pass-Thru

The Pass-Thru option allows qualified service personnel to administer IS II/III
applications on a remote PC. It permits you to establish a remote connection
with the control unit to which the IS II/Ill PC is directly connected. Figure 7
illustrates the relationship of the SPM PC, the communications system control
unit, and the IS II/III PC.
Direct
Connection
IS II/III PC
Figure 7. Pass-Thru
A Pass-Thru request must be initiated at a DOS PC. It is not available from a
UNIX System PC; that is, Pass-Thru cannot be established between two IS
II/III PCs. The local admin PC must be in an idle state.
A Pass-Thru request to a locally connected IS I l/III system causes the modem
to fall back to 1200 bps if the speed is set to 2400 bps and the modem call to
the control unit is at 1200 bps. If necessary, the communication system will
adjust its speed to that of the local SPM PC.
46 System Programming and Maintenance (SPM)
Control Unit
Remote
Connection
II
SPM PC