Toshiba Strata DK 280 Installation Manual page 625

Tl Interface
11.1 RDTU (Tl) Installation Guideline
Toshiba recommends the following when installing
Strata DK280 RDTU (Tl) circuit boards.
1.
2.
3.
4.
5.
6.
7.
Read Section 11.2 before proceeding to Step 2.
Run RDTU Tl related system programs as
described in Section 11.3 of this chapter.
Set Pl and P2, loop back jumper to the ON
position for RDTU self test (see Figure 11-5).
Refer to Subsection 11.5.1 for the appropriate
SW1 Equalizer Switch setting and set SW1 to the
setting that matches the RDTU cable length.
Note:
Ensure the RDTU's component side is facing
right when installing it in the Key Service Unit
(KSU).
Insert the RDTU into the appropriate slot and
apply firm, even pressure to ensure proper mating
of connectors. See Tables 11-1, 11-2 and 11-3 for
RDTU slot installation roles. If the RDTU is
providing tie or DID lines, special consideration
must be taken to determine which slot to install the
RDTU, see Worksheet 2 of Chapter 1 for tie/DID
slot assignment recommendations.
After installing the RDTU, gently pull the PCB
outward. If the connectors are properly mated, a
slight resistance will be felt.
Run the RDTU self check per Subsection 11.6.6.
After self check passes, put PI and P2 to the OFF
position for normal operation and insert the RDTU
PCB back into the appropriate slot.
8.
9.
Install Channel Service Unit(s) (CSUs) and wire
CSUs to the RDTU and Network Interface Unit or
Customer Premises Tl, circuit as required per
Section 11.4.
Note:
Before connecting the CSU to the Telco line,
notify the TI provider. You should a/so notify
the TI provider before disconnecting the CSlJ.
Perform CSU to RDTU and CSU to Network loop
back testing per CSU documentation and Section
11.6 of this section (see Figure 11-l 0).
10. After loop back testing is complete and is
synchronized with the far end Ti circuit, perform
test calls on all RDTU lines. (Use the
troubleshooting procedures in Section 11.8 of this
section to help correct problems.)
11. Check Tl performance periodically for
transmission errors using the "Tl ERR" test
described in the Section 13.9, Data Dump Mode.
This requires a local or remote maintenance
terminal connected to the PIOU or PIOUS PCB
(local) and IMDU or Hayes-compatible modem
(remote).
January 1996 11-l