Sim Card Interfaces; Sim Card Application - Quectel M35 User Manual

Table 15: QPCMON Command Description
Parameter
Mode
Sync_Type
Sync_Length
SignExtension
MSBFirst
―AT+QPCMVOL‖ can configure the volume of input and output.
AT+QPCMVOL=vol_pcm_in, vol_pcm_out
Table 16: QPCMVOL Command Description
Parameter Scope
vol_pcm_in 0~32767
vol_pcm_out 0~32767
3.10.
The module contains two smart interfaces to allow module access to the two SIM cards. These two SIM
interfaces share the same ground and only SIM1 interface has card inserted detection. Only one SIM card
can work at a time. For more details, please refer to the document [6].

3.10.1. SIM Card Application

The SIM interfaces supports the functionality of the GSM Phase 1 specification and also supports the
functionality of the new GSM Phase 2+ specification for FAST 64 kbps SIM card, which is intended for
use with a SIM application Tool-kit.
M35_User_Manual
Scope
0~2
0~1
1~8
0~1
0~1
Description
Set the input volume
Set the output volume
The voice may be distorted when this value exceeds 16384.

SIM Card Interfaces

Confidential / Released
Description
0: Close PCM
1: Open PCM
2: Open PCM when audio talk is set up
0: Short synchronization
1: Long synchronization
Programmed from one bit to eight bit
0: Zero padding
1: Sign extension
0: MSB first
1: Not support
GSM/GPRS Module Series
M35 User Manual
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