Samsung OfficeServ 7400 Technical Manual page 66

Table of Contents
Home Page
OfficeServ 7400 INSTALLATION
TECHNICAL MANUAL PART 3 JUNE 2006
3.4 CONNECTING POWER FAIL TRANSFER
The OfficeServ 7400 offers a Power Fail Transfer feature for analog single line
telephones that are connected to port 1 on the 8SLI, 16SLI2, or 16MWSLI cards.
In case the OfficeServ 7400 loses power from its AC source, and no battery backup is
available, this feature is automatically activated. The analog telephone connected to
Port 1 of the SLI will get C.O. dial tone (direct C.O. line access) activated by an internal
relay. For this feature to work, the SLI ports must be wired as shown in Figure 3.34 Pin
4 (TIP) and Pin 5 (Ring) from a port on the 8TRK card must be connected to Pin 1 (TIP)
and Pin 2 (RING) on port 1 of an SLI card.
Figure 3.17 Power Fail Transfer Connection to 16SLI/8SLI
5 4 2 1
SINGLE LINE PHONE
Figure 3.44 Power Fail Transfer Connection to 16MWSLI/16SLI2/8SLI
3.51