Mitel Sx 50 Dpabx Instructions Guide

Shipping, Receiving and Installation 
200 5-32 Revision 0 9104-091-200-NA issue 5  

6 . 
CABLING AND 
CROSS-CONNECTIONS 
General 
6.1 This Part details the cabling and cross-connections required for installing the SX-50 
communications system. 
Telephone Set and Trunk Cabling 
6.2 Telephone set and trunk cabling terminates on the building cross-connect terminal in 
the normal manner. Central Office trunk loop resistance limit is 1600 ohms. 
Cross-Connections 
6.3 Connection between the equipment cabinet and the MDF should be made using 28 
AWG connector-ended 2%pair cables....

Shipping, Receiving and Installation 
ground key must be connected to a ground and the other to the Ring conductor of the 
station line. Call origination over loop-start trunks does not require a ground start key. 
Table &I Tip and Ring Assignments, 
Universal Card Lead Designation 
Pair ONS 
COV and LSIGS Trunks Module E&M+ 
Pin Colour 
Line DNIC DID Trunks Position MOH PagerC 
Trunk 
Line OPS Line 
26 
W-BL Tip 1 Tip 1 Tip 1 Music In A . 
1 
BL-W Ring 1 lip,1 
Ring 1 Ring1 
Music In B 
27 
w-o 
Tip2...

Cabling and Cross-Connections 
Notes for Table 6-1, TIP AND RING ASSIGNMENTS 
*- The SX-50 system only supports one MOH/Pager Module and one RMATS 
Module. If a Control Card 2 (MCC2) is installed, an MOH/Pager Module is not 
required. When both a Control Card 2 and an MOH/Pager Module are installed, the 
system ignores the MOH/Pager Module. 
rM LS/GS only: Pins 43, 18 are the first lead designations forthe Power Fail Transfer 
circuits (2 per LS/GS Trunk Card). Refer to Figure 6-2, Power Fail Transfer...

Shipping, Receiving and Installation 
T 45 
SET1 
TO - 
co R 20 
I - 
SET2 T 49 
_^ - iV,UY 
TRUNK T 
CARD 
Hkl R 
- 
11 T 
- 
I 
‘- -TJ-. I I 
23 R 
NOTE: DOTED LINES SHOW POWER FAIL TRANSFER MODE ONS 
LINE 
CARD 
200 64 
Figure 6-2 Power Fail Transfer Connections 
Revision 0 
9104-091-200-NA Issue 5  

Cabling and Cross-Connections 
Z-WIRE CONFIGURATION 
I 
T 
R 
TR 
E&M 
IN SYSTEM RR 
A 
M 
E N/C N/C 
N/C 
N/C T 
R 
TR 
RR E&M 
IN SYSTEM 
M B 
E 
&WIRE CONFIGURATION 
I I 
T 
R 
TR 
E&M 
IN SYSTEM RR E&M 
IN SYSTEM 
A 
M B 
E 
DD0060 
Figure 6-3 E&M Trunk Wiring (Back to Back) 
9104-091-200-NA Issue 5 
Revision 0 
200 6-5  

Shipping, Receiving and Installation 
r 
P-WIRE CONFIGURATION 
I 
4-WIRE CONFIGURATION 
T 
R 
E&M 
IN SYSTEM 
A 
M - TR 
RR TELE- 
PHONE 
M COMPANY 
E . E 
DD0061 
Figure &4 E&M Trunk Wiring (PABX to Telephone Company) 
200 6-6 
Revision 0 9104-091-200-NA Issue 5  

Appendix A. 
FCC INTERCONNECTION 
REQUIREMENTS TELEPHONE 
COMPANY INTERCONNECTION 
This equipment has been approved by the Federal Communications Commission 
(FCC) as not being harmful to telephone network when connected directly to the 
telephone lines through the standard 50-pin blue ribbon plug prescribed by the FCC 
Rule. This Appendix is applicable to the telephone interconnection in the United States. 
Notification 
A.1 Prior to the interconnection of this equipment, the local telephone company...

Shipping, Receiving and Installation 
Connection Limitations 
A.2 Due to the FCC Part 68 Rule, no connection can be made to party lines or coin 
telephone services. 
Network Changes 
A.3 The telephone company may make changes to its communication service. Such 
changes may include the change of trunk circuits, but, for such changes, the 
_. 
company shall provide official notification so that the operation of the DPABX service 
is not interrupted. 
Maintenance Limitations 
A.4 This equipment has been...

Appendix B. 
SYSTEM GROUNDING AND 
SURGE PROTECTION 
REQUIREMENTS 
This Appendix describes the basic theory of protection techniques with associated 
installation procedures. These techniques have proved - effective ‘in electronic 
equipment protection. 
Reliable service from electronic switching systems can only be ensured if care is taken 
to protect the solid-state circuitry of the switching system from the effects of electrical 
surges of various kinds. Typically this electrical energy enters the...