Nortel Networks 553-3001-211 manual Programing DAC for mode 4 in service change LD

NT7D16 Data Access card Page 439 of 894

In the outbound operation, the DAC drives the DTR lead OFF until another DM calls it for outbound accessing. The DAC answers the data call and drives the DTR lead ON. The calling DM is then transparently connected to the gateway. The DAC requires the gateway to drive the DCD lead to ON within 35 seconds after the outbound call is connected. Call disconnection may be initiated by dropping DCD (or DSR) from ON to OFF.

Programing DAC for mode 4 in service change LD 11

When used for inbound or outbound gateway access, the DAC can be configured as R232 in LD 11. When used for both inbound and outbound gateway access, the DAC must be configured as R232. When the DAC is programmed as station hunting, outbound gateway access should be in the opposite direction to the hunting for inbound gateway access. See Figure 89 for more details.

Note: If CDR is required, use separate outbound and inbound gateway access.

Figure 89

DAC to Gateway—Inbound/Outbound connectivity

System

	DAC
Outbound
hunting	R232 port 0
	R232 port 1
	R232 port 2
	R232 port 3

Gateway 1

Gateway 2

Gateway 3

Gateway 4

Inbound hunting

553-AAA1127

Circuit Card Description and Installation