Toshiba Strata Vi Electronic Key Telephone System Installation And Maintenance Manual

exist to allow the dissipation of heat 
generated by the power supply and 
NIKSU. 
Humidity at the MKSU loca- 
tion should be within 2Q-80% (without 
condensation), and the 
temperature 
should be relatively constant within a 
range of O-50’ C. 
Exposure to dust 
and airborne chemicals should also be 
taken into consideration. 
The MKSU must be located so 
that all stations are within 1000 cable 
feet of it. Acceptable cable is 22 or 
24 AWG inside telephone station cable, 
jacketed but not shielded,...

The MTOU houses several 
options that must be considered before 
it is installed in the MKSU, they are: 
Rackground music relay service-- 
the optional BR relay, -if installed, 
provides a dry contact at the BR 
terminals on the front of the 
IVITOU to control cut-off of BGM 
during an external page. The relay 
operates whenever an external page 
occurs. 
Night relay service-the optional 
NR relay, if installed, will provide 
a dry contact at the NR terminals 
on the front of the MTOU 
PCB. 
The W3 strap...

A maximum of seven PCBs 
can be installed in the NIKSU, 
They 
are: 
i%lTOU (Tone Unit-k-one per system. 
CRDU (Repertory Dial Unit)-one 
per system, to be installed 
the 
NlCCU PCB when the Automatic 
Dialing-Station option is required. 
NlCCU (Central Control Unit)-one 
per system. 
MSTU (Station Interface Unit)- CO 
1.W co 1,5,6 Ext 10-17 
Ext. 18-25 
install one for each group of eight 
stations. System maximum is two 
(16 stations), 
MCOU (Central Office Unit)--in- Disconnect the EPSA from the 
115...

The MTOU houses several 
options that must be considered before 
it is installed in the MKSU, they are: 
Background music relay servicz-- 
the optional BR relay, if installed, 
provides a dry contact at the 
BR 
terminals on the front of the 
MTOU to control cut-off of BGM 
during an external page. The, relay 
operates whenever an external page 
occurs. 
Night relay service-the optional 
NR relay, if installed, will provide 
a dry contact at the NR terminals 
on the front of the MTOU PCB. 
The W3 strap...

A maximum of seven PCBs 
can be installed in the NIKSU. They 
are: 
MTOU (Tone Unit)--one per system. 
CRDU (Repertory Dial Unit)-one 
per system, to be installed the 
NlCCU PCB when the Automatic 
Dialing-Station option is required. 
MCCU (Central Control Unit)-one 
per system. 
0 
c 
install one for each group of eight 
stations. System maximum is two 
(16 stations). 
MCOU (Central Office Unit)-in- 
stall one for each group of three 
CO/PBX lines. System maximum is 
two (six lines). Two types of 
MCOU...

Ensure that the power switch 
on the MTOU is then plug the 
EPSA into the 115 ;AC outlet and 
measure the voltage at the MTOU input 
terminals. Correct any problems, if 
necessary, before proceeding. Unplug 
the EPSA. 
Mount the CRDU on the 
MCCU if required (see Figure 8), 
Connect the memory back-up 
on the 
MCCU (and on the 
CRDi’if the system is so equipped). 
Refer to Figure 9, locate the SW1 
battery strap on 
the CRDU, and the 
SW3 battery strap on the MCCU; the 
plugs are shown in the off 
or...

using the plastic cable clamps that are 
provided. Run the cable under the 
MKSU and toward the rear, as shown in 
Figure 12. 
Route the cable from #l 
(Ext. 10-17) to Block A and the 
cable from #2 MSTU (Ext. 18-25) to 
Block B. 
Use the standard color code 
sequence and terminate the cables from the vIS’I’U PC& on the MDF blocks as 
shown in Figures 13 and 14. 
(Use one 
side of each block for each cable.) 
a Terminate the individual 2- 
pair station cables consecutively 
Oil 
each ViDF block; attach...

BRIDGING 
CLIPS 2 PAIR JACKETED 
STATION CABLE 
654321 
66M150 SPLIT BLOCK :T. 17 
3T USED MODULAR CORD  

2 PAIR JACKETED 
EiXT. 20 
I 
66M150 SPLIT BLOCK 
1 EXT. 21 
J 
1 
EXT. 22 
-I 
1 
EXT. 23 
J 
1 
EXT. 24 
-I 
1 EXT. 25 
_I 
T USED MODULAR CORD 
EKT  

The various manufacturers of 
modular station blocks have employed 
different color codes to indicate the 
sequence of pairs in their blocks. 
However, the color code most commonly 
used is sho.wn in Figure 15. Verify the 
configuration of your modular blocks 
before connecting the station cables. 
Intercom codes are assigned 
permanently to specific MSTU cable 
appearances in STRATA VI. Make sure 
the station cables are connected to the 
proper terminals (Figure 15). 
The CO/PBX lines are intro- 
duced...