Rainbow-electronics GE863-GPS low power User Manual download pdf (Page 24)

GE863-GPS Software User Guide

1vv0300724 Rev. 3 - 05/07/07

2.6 Placing a Voice call

Before a voice call can be placed, it is recommended to check if the mobile is registered on a network

(see par. 2.5.3.1) and if the signal strength is enough to ensure a call can be made.

2.6.1 Voice call device set up

2.6.1.1 Set the device in voice mode

• Send command

AT+FCLASS=8<cr>

• wait for

response

NOTE: This command may be omitted if the modifier ";" is added at the end of the ATD command

after the number to be dialed.

2.6.1.2 Set the desired audio path active

The GE863-GPS has two different audio paths:

• internal microphone/ear (MT)

• external microphone/ear (HF)

Usually the internal path is used for a handset function, while the external is used for handsfree

function. There are two way to switch between these two paths:

• SOFTWARE: by using the command AT#CAP= <n> (with n=1 OR n=2)

• HARDWARE: by setting AT#CAP=0 and setting the AXE input high (internal MT) or low

(external HF).

If only one path is needed, then it is preferable to use the internal one (MT).

TIP: when Hardware control is not needed AXE pin can be left unconnected.

TIP: the audio paths can be switched also during a call in both ways.

• Send command

AT#CAP=<n><cr>

where:

<n> = 0 for HARDWARE control with AXE input

<n> = 1 for external HF path (regardless of the AXE input status)

<n> = 2 for internal MT path (regardless of the AXE input status)

• wait for

response

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Rainbow-electronics GE863-GPS low power User Manual Page 24