User's Manual

272 Table: eESPA

eESPA_Link_Type_str

This field specifies the type of physical link between the controlling and

the controlled system.

The only supported value that can be entered in this field is RS232.

An authorized of an entry typically found in this field is as follows: RS232

eESPA_ControlStation_b

This value specifies whether the station is a control (master) station,

or a slave. The protocol used conforms to International Standard ISO

1745 Information processing – Basic mode control procedures for data

communication systems. It is a multidrop protocol utilizing a Control

Station.

Because the physical interface is only RS232, it can only support a point

to point interface to the external espa infrastructure. If more than one

system must be integrated, multiple eESPA modules must be configured

on multiple areas.

There is on each RS-232 interface only one system that can act as Control

Station.

If the eESPA module for this site and area must act as Control Station

(master), the value must be True or -1, otherwise, the value must be False

or 0 (slave).

An authorized of an entry typically found in this field is as follows: False

eESPA_Polling_intv_n

This field specifies the polling interval in milliseconds, and is only relevant

if eESPA_ControlStation_b is set to True (only the Control Station is

polling).

An authorized of an entry typically found in this field is as follows: 150

eESPA_Polling_address_list_str

This field is only relevant if the module acts as Control Station

(eESPA_ControlStation_b is set to True).

The Control Station must poll a device or devices on the communication

line with the sequence <address> ENQ.

The characters 0 to 9 can be specified as addresses.

Nortel Communication Server 1000

DECT Messenger Installation and Commissioning — Book 2

NN43120-301 02.01 4 June 2010