Appendix A: Standard Definition of RS-232 Interface
Appendix A: Standard Definition of RS-232 Interface
RS-232 PIN
I/O
RS-232 Standard
Description
1
2
3
4
5
6
7
8
9
O
O
I
I
-
O
O
I
O
CD
RXD
TXD
DTR
GND
DSR
CTS
RTS
RI
Data Carrier Detect
Receive ser ial data
Transmit serial d ata
Data Termi nal Ready
Groun d
Data Set Ready
Clear To Send
Reque st To Send
Ring I ndicator
Appendix B: Interpretation of extended error code
0
3
4
10
Phone failu re
Operation n ot allowed
Error Code
Diagnostic
Operation n ot su pported
Hint
If SIM card is inserted, check the SIM
card if it is clean and properly inserted.
SIM n ot inserted
SIM PIN required
SIM PUK r equir ed
Enter PIN code.
Enter PUK code.
Note: Call y our network pro vider if
y ou do n't know t his code.
Check validity of your SIM card.
If SIM card damaged, call your
network provider.
Check the c ode y ou entered .
Enter PIN2 code.
Enter PUK2 code (call your network
provider if you don't know this code).
Incorrect password
SIM PIN2 required
SIM PUK2 required
SIM Failure
16
17
18
11
12
13
Call your technical support.
10
26
Dial string too long
Check your phone number (max 20
digits).
G
SM/GPRS
Modem User's Manual
