SIM800 Series_Multiplexer_Application Note_V1.04
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3.6.6 FCon
Message type coding octet is
：
1
2
3
4
5
6
7
8
EA
C/R
0
0
0
1
0
1
Hex value is 0xA3 (Command), 0xA1 (Response).
The length byte contains the value 0 and there are no value octets.
3.6.7 PN,NSC,RPN,RLS,SNC
Not Supported.
3.7 Data Channel
SIMCOM multiplexer data channels shall be used to transmit user data streams such as AT command data,
GPRS data and GSM CSD data streams.
Data channels shall be established after and only after control channel (DLCI 0) connected.
Please refer to 3.1 for more details.
If the customer wants to transmit large data streams such as PPP, the DLCI 1 is recommend strongly
because the buffer of DLCI 1 (16K Byte) is more than other channel (1K Byte).
3.8 About Flow Control
SIMCOM multiplexer supports software flow control and can not perform hardware flow control mechanism.
Software flow control is implemented by GSM 0710 MSC, FCoff and FCon message frame.
MS will send MSC message to TE with FC bit set to 1 in V.24 control signals when refuse to accept frames.
NOTE
