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3.4 Options

3.4.1 ALUM4

Introduction

In the event that OfficeCom/OfficePoint experiences a voltage drop, voltage dip or unrecoverable system errors, the ALUM module can transfer up to four analog trunks directly to four analog telephones, bypassing the system.

The ALUM4 Module provides power failure transfer for MSI ground-start or loop-start trunks, but ground-start trunks require a physical ground-actuator button.

When the system is deactivated or when an error occurs, the trunks are connected directly to the telephones. When normal operation resumes, the trunks are again routed through the system.

Only analog telephones can be used for the transfer, and they must use the same signaling method as the trunk; otherwise, dialing is not possible.

ALUM4 Module Function

Figure 3-83 ALUM4 Function

Interfaces

Figure 3-84 ALUM4 Interfaces (S30817-Q935-A)

 
Split the cable from X6 and connect half to the analog trunk board and half to the CBPC analog ports or analog subscriber boards.  

ALUM Module Interface Assignments

Table 3-78 ALUM4 Interface Assignments (Not for U.S.)

Pin 
Connector X3 
Connector X4 
Connector X6 
R1 from trunk 1a 
AE1 to Stn. 1a 
AT1 to TLA a 
T1 from trunk 1b 
BE1 to Stn. 1b 
BT1 to TLA b 
R2 from trunk 2a 
AE2 to Stn. 2a 
AT2 to TLA a 
T2 from trunk 2b 
BE2 to Stn. 2b 
BT2 to TLA b 
R3 from trunk 3a 
AE3 to Stn. 3a 
AT3 to TLA a 
T3 from trunk 3b 
BE3 to Stn. 3b 
BT3 to TLA b 
R4 from trunk 4a 
AE4 to Stn. 4a 
AT4 to TLA a 
T4 from trunk 4b 
BE4 to Stn. 4b 
BT4 to TLA b 
 
 
TA1 to SLA* a 
10 
 
 
TB1 to SLA* b 
11 
 
 
TA2 to SLA* a 
12 
 
 
TB2 to SLA* b 
13 
 
 
TA3 to SLA* a 
14 
 
 
TB3 to SLA* b 
15 
 
 
TA4 to SLA* a 
16 
 
 
TB4 to SLA* b 
* = or to free analog port 

Table 3-79 ALUM4 Interface Assignments (for U.S. Only)

Pin 
X3
(to MDF) 
X4
(to MDF) 
Y-Cable from X6 to TMGL4 
Y-Cable from X6 to Analog Ports1  
 
 
 
Pin 
Assignment 
Pin 
Assignment 
R from trunk 1 
R to station 1 
T to TMGL4 port 1 
T to analog port 1 
T from trunk 1 
T to station 1 
R to TMGL4 port 1 
10 
R to analog port 1 
R from trunk 2 
R to station 2 
T to TMGL4 port 2 
11 
T to analog port 2 
T from trunk 2 
T to station 2 
R to TMGL4 port 2 
12 
R to analog port 2 
R from trunk 3 
R to station 3 
T to TMGL4 port 3 
13 
T to analog port 3 
T from trunk 3 
T to station 3 
R to TMGL4 port 3 
14 
R to analog port 3 
R from trunk 4 
R to station 4 
T to TMGL4 port 4 
15 
T to analog port 4 
T from trunk 4 
T to station 4 
R to TMGL4 port 4 
16 
R to analog port 4 

1 To the analog station ports on the CBPC (recommended) or to four consecutive ports on an 8SLA.

Note: Pinouts shown are at the board itself. The supplied main distribution frame cable (MDF cable) reverses the signal order for X3 and X4 before the MDF.

ALUM4 Module Block Diagram

Figure 3-85 ALUM4 Circuit in Power Failure Mode

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