GSM900-FFC RF Solutions, GSM900-FFC Datasheet - Page 23

• Manufacturer Part Number: GSM900-FFC
• Description: FLAT CABLE FOR GSM900
• Manufacturer: RF Solutions

Specifications of GSM900-FFC

• Accessory Type: Cable
• For Use With/related Products: GSM900
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Product Description
Huawei GTM900 GSM/GPRS Wireless Module
4.5 Ringer Interface
See Table 4-3 for the signals over the Audio interface.
Table 4-3 Signals over Audio interface
If you drive an external ringer with the Ringer signals, you shall need an external drive
circuit. See Figure 4-3 for the drive circuit of the Ringer signals.
Figure 4-3 Drive circuit of Ringer signals
33
34
39
40
35
36
37
38
No.
Huawei Technologies Proprietary
AUXO+
AUXO-
AUXI+
AUXI-
EAR+
EAR-
MIC+
MIC-
Signal name
4-4
Handsfree audio output signal+
Handsfree audio output signal–
Handsfree audio input signal+
Handsfree audio input signal–
Handheld audio output signal+
Handheld audio output signal–
Handheld audio input signal
Handheld audio input signal–
Chapter 4 Interface Application
Description
+