Enabler II-G Assiste GPS Integration Guide - Farnell

Enfora Enabler III-G
Modem Integration Guide
For a minimal implementation, connect RxData and TxData to the COM port serial data lines, connect
DTR and RTS to GND.
Ring
Ring
Ring
6.6.10.1. Ring Indicate (Pin 23)
The Enabler III-G module is capable of using the Ring line to discern the type of incoming
call. The indicator can be monitored via a hardware line available on the 100-pin I/O signal
connector.
The function of the Ring line depends on the type of the call received.
When the module is receiving a voice call, the Ring line goes low for 1 second and high for
another 2 seconds. Every 3 seconds the ring string is generated and sent over the Receive
(Data Out) (Rx) line. If there is a call in progress and call waiting is activated for a connected
handset or hands free device, the Ring pin switches to ground in order to generate acoustic
signals that indicate the waiting call.
1 second 2 seconds 1 second
RING String RING String
2 seconds
When a Fax or data call is received, Ring goes low and will remain low. Every 3 seconds a
ring string is generated and sent over the Receive (Data Out) (Rx) line.
3 seconds
RING String RING String
3 seconds
RING String
When an incoming SMS is received , Ring indicate goes low for 1 second, then returns to a
high state. See below logic diagram.
1 second
URC
Figure 20 - Ring Indicate Timing
GSM0308PB001 49 Version 1.03– 7/17/2007