ESPA 4.4.4

ESPA 4.4.4 is a serial protocol, originally created for interconnecting paging equipment with phone exhange systems and computers. This protocol is supported by a large number of systems, such as fire alarms, intruder alarms, nurse call systems and DECT cordless telephony.

TNA devices provide base support of ESPA 4.4.4 protocol. One device can be connected to the TNA Serial port. The device plays the role of a control station and the TNA acts as a paging system.

The data block received from the device is forwarded to evalink talos with no modifications. The protocol support is implemented only on the base level. Any further parsing of received messages is done on evalink talos side. The TNA only verifies the checksum of the received messages.

Enable ESPA 4.4.4 on the TNA Web Server

info

Access level 4 is required to enable or disable ESPA 4.4.4 integration.

When ESPA 4.4.4 is enabled, the TNA allocates the serial port and no other TNA feature configured to use the serial port can be started.

ESPA 4.4.4 cannot be enabled if another TNA feature is already using the serial port.

To enable ESPA 4.4.4 integration, do the following:

1. On the TNA Web Server, navigate to settings Settings > view_module Integrations from the top right corner of the page

2. From the list of integrations, search for ESPA 4.4.4 and toggle it

Once ESPA 4.4.4 integration is enabled, you can find it under view_module Integrations on the top navigation menu.

The status is also reflected on the Integrations section of the Home page.

Configure ESPA 4.4.4

info

Access level 3 or above is required to configure ESPA 4.4.4 integration.

To configure ESPA 4.4.4 parameters, do the following:

1. On the TNA Web Server, click on view_module Integrations from the top navigation menu and choose
   ESPA 4.4.4

2. On the page, configure the following parameters:

Name	Description
Baudrate	The Baudrate is the speed at which data bits are sent. The values range from 300 up to 9600 Default value: 9600
Parity	The Parity bit can provide a simple form of error detection. Possible values are: None: no parity bit is added to the data. Even: the parity bit is set to space 0 if the total number of data bits in the mark 1 state is even. Odd: the parity bit is set to space 0 if the total number of data bits in the mark 1 state is odd. Default value: None
Data Bits	The Data Bits is the number of bits of data in each frame. Possible values are 7 and 8 Default value: 8
Stop Bits	The Stop Bits is the number of bits used to mark the end of a frame. Possible values are 1 and 2 Default value: 1

3. Click on Save

4. (Optional) Click on Undo changes to reset the parameters to their previous values