Local Loopback – Dte Test Message Procedure; Local Loopback – Dte Test Message Alternative Procedure - Paradyne Comsphere 3510 User Manual

Your Action
1. Press the LL test switch.
2. Operate your DTE to send test message.
3. Press the LL test switch.
Local Loopback – DTE Test Message Alternative Procedure
Your Action
1. DTE turns on Pin 18 of the EIA interface or
Pin LL of the V.35 interface
DSU to perform a Local Loopback.
2. DTE sends test message.
3. DTE turns off Pin 18 or Pin LL to restore DSU to
normal.
*
Pin 18 of the EIA interface or Pin LL of the V.35 interface will not function unless straps S3-3 and S3-4 are
enabled.
**
DSR EIA output and the indicator goes Off during LL unless strap S5-5 (DSR always ON) is enabled.
3510-A2-GN32-70
Table 3-5
Local Loopback – DTE Test Message Procedure
Table 3-6
*
which causes the
**
July 1999
DSU Front Panel Response
LL indicator lights, TEST indicator flashes. After
about 6 seconds, TEST indicator remains ON.
TXD and RXD indicators show interface lead status
while test message is transmitted.
LL indicator goes Off. TEST flashes for about
6 seconds, then goes Off.
DSU Front Panel Response
LL indicator lights, TEST indicator flashes. After
about 6 seconds, TEST indicator remains ON.
TXD and RXD indicators show interface lead status
while test message is transmitted.
LL indicator goes Off. TEST flashes for about
6 seconds, then goes Off.
Operation
**
3-13