Patton electronic user manual Configuration Configuring the IM2RC/F Hardware Switches

3.0 CONFIGURATION

This section describes how to configure the IM2RC/F rear card. Please refer to the appropriate function card user manual to configure the function card.

WARNING! The IM2RC/F card contains sensitive integrated circuitry. Failure to ground yourself during configuration may result in damage to the IM2RC/F card or the front function card.

3.1 CONFIGURING THE IM2RC/F HARDWARE SWITCHES

The Model IM2RC/F rear card features an eight position DIP switch mounted on the rear of the printed circuit board. Use these switches to configure G.703 operational and timing modes. Figure 1, below shows the position of the DIP switches on the board.

ON

DIP Switches

OFF

Figure 1. Model IM2RC/F Card Showing DIP Switches

Figure 2 shows the orientation of the DIP switches with respect to the “ON” and “OFF” positions.

ON

OFF

Figure 2. Close up of Configuration switches

5

SWITCH SUMMARY TABLE

Position	Function	Factory Default
S1	Reserved for Future Use	Off
S2	Operation Mode	Off	Clear Channel
S3	Timing Mode	Off	Network Timing
S4	Reserved for Future Use	Off
S5	Reserved for Future Use	Off
S6	G.703 Transmit Octet	Off	Injected BPVs
S7	Reserved for Future Use	Off
S8	Reserved for Future Use	Off

Notice! The RJ-45 G.703 port of the Model IM2RC/F is intended to connect to telecommunication network voltage (TNV) circuits which may carry dangerous voltages. Therefore the power and network cables must be disconnected prior to switch configuration.

Switch S1: Reserved for Future Use

Switch S1 is reserved for future use and should remain in the Off position.

Switch S2: Operation Mode

Use Switch S2 to set the IM2RC/F for either Clear Channel or Octet Timing Mode. Most installations use Clear Channel (64kbps) Mode operation, though some installations may use Octet Timing Mode.

When operating in octet timing mode, the IM2RC/F facilitates a sense of frame synchronization by inserting bi-polar violations in the AMI conding structure. When the IM2RC/F is set to Octet Timing Mode (On position), all communications equipment in the channel must be configured to communicate at 128 kbps (64 kbps data plus 64 kbps octet framing pattern) Additionally, all terminal equipment must support octet timing. When set to Clear Channel Mode, the system operates at 64 kbps.

S2	Setting
Off	Clear Channel Mode
On	Octet Timing Mode
	6