Envoy ACP/XF Application Programming Manual

System Procedure Call Specifics for EnvoyACP/XF
EnvoyACP/XF Application Programming Manual–132179
4-5
CONTROL Procedure
.<0> = 1, .<8:15> = station index value: Specifies the station that is to
receive the DISC command.
NRM Trib .<0> = 0,
NRM Trib .<15>
= 0: Switches the local station to the Logical
Disconnected state (LDS), so that the station responds
with DM to all messages from the primary station
(other than SNRM).
NRM Trib .<0> = 0,
NRM Trib .<15>
= 1: The secondary station remains in ITS but
responds with RD to any further messages (other than
DISC command frames) from the primary station.
NRM Trib .<0> = 1: The station specified by stn. index <8:15>
remains in the Information Transfer State (ITS), but
responds with RD to the next message (any further
messages other than a DISC) from the primary station.
19 Causes a request to the driver to perform a
modem-control operation to drop DTR.
Clears the
Data Terminal Ready (DTR) modem signal. Required
with switched-line facilities, and recommended for all
line configurations, because nonswitched lines often
have switched-line backup configurations.
Table 4-2. CONTROL Function Codes (page 3 of 3)
Function
Code Parameter Description