User's Manual

eCAP
There are four different types of devices that can be connected to the eCAP module using
V.24/RS232, as follows:
• Nurse Call systems
There are many types of Nurse Call systems offering data using V.24/RS232. However,
there is no standard protocol.
• Building Management systems
There are many types of Building Management systems offering data using V.24/RS232.
However, there is no standard protocol.
• Paging systems
There are many types of Paging systems. Almost all offer a V.24/RS232 interface carrying
the ESPA protocol. If the paging System supports ESPA 444 protocol, use the eESPA
module instead of the eCAP.
• Line Printer Protocols
Some older Building Management systems offer a line printer protocol over V.24/RS232.
This is a simple type of protocol, offering only incoming data. There is no guarding on the
protocol, such as ACK/NAK, or timers.
Before using the eCAP module, check which protocol is offered, and check with Avaya, to see
if the protocol is supported by DECT Messenger.
If the protocol is supported, install the correct eCAP module. If a Line Printer protocol is
required, you can build the protocol yourself.
Remember that the DECT Messenger structure is based on five parameters; see
Parameters
required to set an alarm on page 96. You must know which parameters are coming in from the
external system, and you must specify these parameters in DECT Messenger. For more
information, see Avaya DECT Messenger Installation and Commissioning, NN43120-301,
which describes the supported protocols in detail.
eESPA
The eESPA module supports the ESPA 444 protocol. This is a complex protocol; see Avaya
DECT Messenger Installation and Commissioning, NN43120-301 for more detailed
information about the protocol. Read the information provided for the protocol before
attempting to set up the eESPA Module.
V.24 - RS232 connections (eCAP, eESPA)
DECT Messenger Fundamentals March 2012 143