Nortel Circuit Card Installation Manual page 466

Page 466 of 906
Table 158
Connect and disconnect protocol (Part 6 of 12)
Mode of
operation Interface application
Mode 6 Inbound and Outbound
Gateway access (with forced
DTR)
Mode 7 Inbound Hotline Gateway
access (with forced DTR)
553-3001-211 Standard 3.00
NT7D16 Data Access card
August 2005
Comments
Inbound and Outbound Gateway protocol:
The DAC operation is identical to mode 4 except
that DTR is always forced ON (except during
disconnect). The establishment of the outbound
call does not require DCD to be driven ON by the
Gateway.
Call disconnection:
Disconnection is identical to mode 4 except that
when a call is released, the DAC turns DTR OFF
for 0.2 second and then ON. DTR stays ON until
the next call release.
Inbound Hotline Gateway protocol:
The DAC operation is identical to mode 5 except
that DTR is always forced ON (except during
disconnect).
Call disconnection:
Disconnection is identical to mode 6.