Camp–On—No Answer; Common Audible Ringer Interface; Communications Card Support - Comdial DXP Plus Manual

DXP Plus General Description
Camp–On—No Answer
Refer to the discussion titled Camp–On With Automatic Call Back.
Clear Major Alarm Ring
Major alarm rings occur whenever a number of faults exceed a programmed threshold. You can use a
telephone station to clear a major alarm ring by pressing the INTERCOM button and then dialing a
feature code (default code is #09). However, the telephone station must have a class of service (COS)
assigned to it that has this feature enabled. The installer or programmer enables this feature through COS
programming.
Central Message Desk
The programmer can designate one station as the central message desk and arrange for it to have
exclusive message waiting control. A central message desk user takes messages for other system users,
controls the message waiting light at their telephones, and delivers the messages upon request.
Also refer to the discussion titled Message Waiting.
Central Processor Switched Data Port Configuration
The CPU board provides a dual in-line pin (DIP) switch that enhances installer convenience in setting up
data communications between the DXP Plus and an external data device. It is possible to mismatch the
data port configurations between the DXP Plus and the external device in a manner that prevents data
communications from occurring. The DIP switches provide a hardware way of setting the data
configuration to a known set of parameters without the need for reprogramming the system. With the
switch set to ON, the DXP Plus provides the following data parameters:
Parameter
Baud Rate In
Baud Rate Out
Data Bits
Stop Bits
Parity Bits
Flow Control

Common Audible Ringer Interface

Relay connections that provide dry-contact closure whenever ringing occurs are available on the central
processor unit circuit board. The relay closure tracks the ringing pattern of the applied ring signal and is
typically used to control an external ringer device. The installer can program the particular ringing
assignment that is tracked, and the ringing assignment can be any one of those that are provided by the
flexible ringing assignment feature.
Also refer to the discussions titled Auxiliary Ringer Interface, External Paging Interface, Flexible
Ringing Assignments, Line Answer From Any Station, and Night Transfer (Of Ringing).

Communications Card Support

The communications card provides serial data ports for interfacing such items as open architecture
interface applications, PC attendant positions, and the SMDA data printer. Technicians install
communications cards on the services board, the expansion cabinet interface boards, and the main
cabinet's auxiliary board. Each of these boards will accept two communications cards in its lower two
slots. The DXP Plus supports a maximum of 18 serial data ports. Two of these ports are the dedicated
ports provided by the CPU board while communications cards provide the remaining 16 undedicated
ports. For related information, refer to the feature description titled, Serial Data Port.
Maintenance Port
9600
9600
8
1
None
None
Modem Port
2400
2400
8
1
None
None
Understanding The Features – 61
GCA40–130