Telit EZ10-GPRS/-PCS
Product Description
80269ST10014a, Rev. 3 – 26/09/05
Reproduction forbidden without written authorization by Telit Communications S.p.A.
Page 30 of 74
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Congestion tone;
•
Connected tone;
•
Call dropped;
•
No service tone;
•
Alarm tone.
•
The selected /selectable acoustic device on EZ10-GPRS model is the EAR_HF Audio path
to be activated with the related AT commands.
•
The selected /selectable acoustic device on EZ10-PCS with PYG Option can be set to the
GPIO7 as the BUZZER output.
2.9.18 DTMF
tones
The sending of DTMF tones is managed by specific AT commands.
These tones are activated with AT commands only during voice calls.
The minimum duration of a DTMF tone is 100 ms.
Group high
Group low
1209 Hz 1336 Hz
1477 Hz
697 Hz
1
2
3
770 Hz
4
5
6
852 Hz
7
8
9
941 Hz
*
0
#
NOTE: The GSM system architecture defines that the audio signal of the DTMF tones is inserted
by the network switches on commands sent by the Mobile Station (MS). Thus, the default duration
parameters may vary from network to network. In case that the devices to be controlled by DTMF
are sensitive related to the duration of the tones and timing of the sequences, dedicated
investigations on the parameter settings have to be made.
2.10 EMC
Compliant to & ETS 300–342–1 and all applicable GSM Specifications.
Compliant to Directive 1999/05/EC.