Nortel Networks 553-3001-211 manual Call disconnection Host, Hotline originated by Host Inbound

Page 456 of 894 NT7D16 Data Access card

Table 153

Connect and disconnect protocol (Part 8 of 12)

Mode of
operation	Interface application	Comments
		Call disconnect ion (DAC):
		DAC drops DSR, DCD, and CTS if the local DM
		user releases the call. The Host should then drop
		the call.
		DAC drops DSR, DCD, and CTS if the Host sends
		a long break or three short breaks. The Host
		should then drop the call.
		Call disconnection (Host):
		The Host toggles DTR from ON to OFF (DTR
		must be OFF for 100 ms or more). The DAC drops
		DSR, DCD, and CTS and disconnects the local
		call.
Mode 9	Hotline call origination	Hotline originated by Host (Inbound):
		Host toggles DTR from OFF to ON to initiate the
		Hotline call.
		DAC responds by trying to establish a Hotline call
		to a specific Data Module (Autodial).
		3When Data Module answers, then and only then,
		the DAC turns DSR, DCD, and CTS ON (the DAC
		does not send any prompts to the Host). If the
		Data Module is busy or not responding, the DAC
		requires another transition of DTR from OFF to
		ON to initiate another Hotline call. If the Host
		keeps DTR ON, the DAC does not try to establish
		another Hotline call, unless the Host sends a
		<CR> while DTR is ON.
		Call disconnection:
		Disconnection is identical to mode 8.

553-3001-211 Standard 2.00 September 2004