August 2012 – Ed.1.2
EQUITEL – E451 Technical manual
Page 26
5.5
Inputs and outputs
In this page (see Figure 19) are configured, in one side, two parameters related with the TCP connection
established between E451 and the controller:
•
Send GPIO change
: Activate or not sending a message indicating that there has been an input
change each time this occurs. (By default: deactivated).
•
Use Keep-Alive
: Activate or not the use of the timer “keep-alive”. In the case of activating this
option, we will have to configure the timer time in seconds (by default: deactivated).
On the other hand, in this page we establish the output relay activation configuration controlled by DTMF
tones. Those tones are generated by the SIP device with which we have established the communication with
the intercom E451.
•
Method of detection DTMF tones
: These are the different methods for sending DTMF tones that are
detectable by E451:
o
None:
The option to activate the relay using DTMF tones is deactivated..
o
In band Audio:
The DTMF signals are sent codified as the audio.
o
Outband-RTC2833:
Signals are sent out band using the mechanism RFC-2833.
o
SIP INFO packets:
the DTMF tones are sent out band as a SIP INFO packet.
•
DTMF Activation Code
: DTMF activation code. (Values from 1 to 5 digits).
•
Relay Activation Duration
: Relay activation time, in seconds (from 1 to 120 seconds).
Figure 19.
TCP connection and output relay activation
