Rstu Installation - Toshiba STRATA CTX100 Installation And Maintenance Manual

PCB Installation
BSTU/RSTU – Standard Telephone Interface Unit
BSTU/RSTU Installation
1. Make sure the factory-installed SBSS (BSTU subunit) or SRSS (RSTU subunit) is securely
attached to the BSTU or RSTU
WARNING! The shield on the back of the BSTU is designed to protect you from
Note "RSTU" can be substituted for "BSTU" in these instructions.
2. Insert the BSTU (component side facing right) into the appropriate slot, and apply firm, even
pressure to ensure proper mating of connectors.
3. After installing the BSTU, gently pull the BSTU outward. If the connectors are properly mated,
a light resistance is felt.
When installing the BSTU into an existing system, system power must be cycled only if the
Note
MW mode (P11) is changed.
Table 4-4 BSTU Controls, Indicators, and Connectors
Control/Indicator/Connector
Ring voltage W1 jumper (PSTU1
(V.4) and PSTU2 only)
R48S connector P6 (RSTU)
R48S connector P7 (RSTU)
Mu/A P10
NDH Disable
Table 4-5 RSTU3 Controls, Indicators, and Connectors
Control/Indicator/Connector
Ring voltage W1 jumper (PSTU1
(V.4) and PSTU2 only)
R48S connector P6 (RSTU)
R48S connector P7 (RSTU)
Mu/A P10 (RSTU3 only)
MW (Message Waiting) Mode P11
(RSTU3 only)
4-12
(Figures 4-9
potentially hazardous ring voltage. Do NOT remove this shield.
Type of Component
3-terminal jumper
9-pin connector
6-pin connector
3-terminal jumper
3-terminal jumper
Type of Component
3-terminal jumper
9-pin connector
6-pin connector
3-terminal jumper
3-terminal jumper
and 4-10).
Description
Sets ring generator voltage level for all circuits.
H=190V P-P, L=130V P-P.
Interface connector to P6 of R48S.
Interface connector to P7 of R48S.
Mu Law or A Law PCM companding. (Must be
set to Mu Law in the U.S. and Canada). No
strap = Mu Law.
Always set jumper to "NDH Disable."
Description
Sets ring generator voltage level for all circuits.
H=190V P-P, L=130V P-P.
Interface connector to P6 of R48S.
Interface connector to P7 of R48S.
Mu Law or A Law PCM companding. (Must be
set to Mu Law in the U.S. and Canada). No
strap = Mu Law.
CON = Electronically controlled message
waiting light (U.S. and Canada).
NOR = Relay controlled message waiting light.
Do not use this in the U.S. and Canada since
this option may cause message waiting cross-
talk noise in some installations.
Strata CTX I&M 10/02