Specifications

Section 2: PCB Installation and Startup

Aspire S Hardware Manual Section 2: PCB Installation and Startup ◆ 2-27

Direct Inward Dial (DID) (2DIOPU-S) PCB (Figure 2-12)

The 2DIOPU-S PCB, with software 2.21 or higher, supports the analog DID and single line telephone inter-

face functions (such as Off-Premise Extension). The function type is assigned in programming for each port.

The DIOPU-S PCB provides:

● 2 DID/OPX trunk circuits

● 2 DID/OPX trunk status LEDs

● 1 PCB status LED

● 1 PBXG Grounding Wire

The CN201 connector provides connection to 2 analog DID trunk ports, which are polarity sensitive (tip to

tip, ring to ring). The OPX circuits, however, are not polarity sensitive. The DIOPU-S requires one universal

slot, with 4 maximum PCBs per system. The system will assign either trunk or extension ports to the PCB

based on the system programming (10-03-01). The PCB provides track resistance of 1500 ohms (PB loop)

and 3000 ohms (DP loop) which includes the DC resistance of the terminal.

Figure 2-12: 2DIOPU-S INSTALLATION