h1. GTI9100ModemTTYACM0 List of known AT commands:
# picocom /dev/ttyACM0 
picocom v3.1

port is        : /dev/ttyACM0
flowcontrol    : none
baudrate is    : 9600
parity is      : none
databits are   : 8
stopbits are   : 1
escape is      : C-a
local echo is  : no
noinit is      : no
noreset is     : no
hangup is      : no
nolock is      : no
send_cmd is    : sz -vv
receive_cmd is : rz -vv -E
imap is        : 
omap is        : 
emap is        : crcrlf,delbs,
logfile is     : none
initstring     : none
exit_after is  : not set
exit is        : no

Type [C-a] [C-h] to see available commands
Terminal ready
AT+CLAC
ATS

ATD

ATA

ATO

ATE

ATH

ATV

ATZ

ATl

ATm

ATQ

ATX

AT&F

AT&D

AT&C

AT\Q

AT+CGSMS

AT+CMGD

AT+CMGF

AT+CMGL

AT+CMGR

AT+CMGS

AT+CMGW

AT+CMMS

AT+CMSS

AT+CNMA

AT+CNMI

AT+CPMS

AT+CSCA

AT+CSCB

AT+CSMS

AT+XCSSMS

AT+XSMS

AT+XTESM

AT+CSDH

AT+CSAS

AT+CRES

AT+CMGC

AT+CSMP

AT+CGREG

AT+COPN

AT+COPS

AT+CREG

AT+CSQ

AT+XBANDSEL

AT+XCOPS

AT+XCSPAGING

AT+XEONS

AT+XREG

AT+XAACOPS

AT+XUBANDSEL

AT+XRAT

AT+CPLS

AT+CPOL

AT+XHOMEZR

AT+CHUP

AT+CMOD

AT+CTFR

AT+VTS

AT+XCALLSTAT

AT+XDTMF

AT+XVTS

AT+CSTA

AT+CVHU

AT+VTD

AT+CCWE

AT+CR

AT+CRC

AT+XPROGRESS

AT+XREDIAL

AT+CAOC

AT+XLIN

AT+CCFC

AT+CCWA

AT+CHLD

AT+CLCC

AT+CLCK

AT+CLIP

AT+CLIR

AT+CNAP

AT+COLP

AT+COLR

AT+CPWD

AT+CSSN

AT+CUSD

AT+CCUG

AT+CBST

AT+CEER

AT+CGACT

AT+CGATT

AT+CGAUTO

AT+CGCLASS

AT+CGCMOD

AT+CGDATA

AT+CGDCONT

AT+CGDSCONT

AT+CGEQMIN

AT+CGEQNEG

AT+CGEQREQ

AT+CGEREP

AT+CGPADDR

AT+CGQMIN

AT+CGQREQ

AT+CGTFT

AT+XCGCLASS

AT+XDNS

AT+XGAUTH

AT+FCLASS

AT+CRLP

AT+XNVMPLMN

AT+XNVMMCC

AT+CBC

AT+CCID

AT+CCLK

AT+CFUN

AT+CGMI

AT+CGMM

AT+CGMR

AT+CGSN

AT+CIMI

AT+CMEE

AT+CMUX

AT+CNUM

AT+CPIN

AT+CPWROFF

AT+CRSM

AT+CSCS

AT+CSIM

AT+CSVM

AT+CTZR

AT+CTZU

AT+IPR

AT+XCTMS

AT+XGENDATA

AT+XPINCNT

AT+XLOG

AT+XMER

AT+XSIMSTATE

AT+TRACE

AT+XL1SET

AT+XSIO

AT+XDLCTEST

AT+XPOW

AT+XCEER

AT+XEER

AT+XTRACECONFIG

AT+XMUX

AT+XFDOR

AT+XFDORT

AT+XCONFIG

AT+XAPP

AT+XHSDUPA

AT+CPIN2

AT+XDATACHANNEL

AT+CONNECTPORT

AT+CAMM

AT+CACM

AT+CCHO

AT+CCHC

AT+XCSP

AT+NEER

AT+CUAD

AT+XUICC

AT+XLEMA

AT+XSYSTRACE

AT+CLAC

AT+CPUC

AT+CLAN

AT+CGLA

AT+CRLA

AT+CPAS

AT+XSVM

AT+XNOTIFYDUNSTATUS

AT+XRXDIV

AT+XSETCAUSE

OK
AT+TRACE can enable protocol traces (to be used with xgoldmon):
AT+TRACE=1
OK