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System & Station
Program 21 – Modem Pool Port Assignments
Strata DK Programming 5/99 3-59
System & Station
Program 21 Overview
This program assigns modems to the system modem pool. Program 21 identifies modems
connected to standard telephone ports (line side of modem) and digital/PDIU-DS ports
(RS-232 side of modem). With data security groups (Program 20, LEDs 17~20) and the call the
blocking feature (Program 31, LED 04), modem access can be denied or allowed to data users.
Notes
● PDIU-DS must be installed on PDKUs in slots designated for DIU operation. (See Chapter 2 –
DK40i Configuration and Chapter 4 – DK424 Configuration.)
● When modems are connected to standard telephone ports (PSTU, RSTU, RSTU2, PESU,
RDSU/RSTS, KSTU2, QSTU2) the Executive/ Privacy Override blocking feature (Program
31, LED 18) should be enabled for the modem RSTU, RSTU2, PSTU, PESU, RDSU, KSTU2
and QSTU2 ports for data security. The LED 18 feature should be disabled to enable callers to
switch from voice to data, or vice versa.
● Digital telephones with RCPI-DIs or PDIU-DIs that must access modems from a pool require
a
0RGHP button assigned in Program 39.
● PDIU-DS ports that are connected to modems in the modem pool should be set with LEDs 01,
02, 03, and 04 in Program 20.
● If a modem connected to PDIU-DS is connected to a telephone network line instead of a
standard telephone station port, Program 21 should not be used.
● Use Program 22 to assign modem/PDIU-DS stations to hunt sequences.
● DIUs can be connected to any ports associated with PDKU circuits, except for ports associated
with circuit 8 on a PDKU1. All PDKU2, KCDU, and QCDU circuits can support DIUs. DIUs
can also be connected to any digital circuit in the DK14 or DK40i KSU.
● DIUs can be connected to ports associated with PDKU1 circuits 1~7 only. All PDKU2
circuits, 1~8, can support RPCI/DIUs. RDSU circuits 5~8 can support RPCI/DIUs.