Toshiba CTX28 manual Call Data Monitor Jack, Loop Back

T1

RDTU Installation

Call Data Monitor Jack

RDTU3A has an RS-232C port for maintenance monitoring and troubleshooting purposes. This should be used when requested by Toshiba Technical Support Engineers.

Communication parameters are 9600bps, 8, and 1.

RDTU3 Call-monitor jack

Dealer-supplied 6-wire telephone modular cord (cross-pinned)

PC with communication software - such as ProComm™

PC DB9 or

DB25 Com port

Toshiba PPTC9 or

PPTC25F

T1

Call-monitor jack (RJ11) pin numbering

RD	1	1	Output
TD	2	2	Input
DSR	3	3	Output
DTR	4	4	NC
DCD	5	5	Output
SG	6	6	Signal Ground

6444

Figure 8-5 Call Monitor Jack for the RDTU3

Loop Back

You can put the RDTU3A in remote loop back mode with this port.

The command “L” and “Q” are used for remote loop back command.

L = Start remote loop back mode

Q = Quit remote loop back mode

Remote loop back commands are shown below.

l Echo back

LRDTU outputs L and BSY LED flashes

q Echo back

Q RDTU outputs Q and BSY LED is operating normal

The RDTU3A loop back test can made with the same process described in “Network/CSU/RDTU Span Test” on page 8-20. Refer to Figure 8-12 on page 8-21.

Strata CTX I&M 06/04 8-9