11.2.8 +VTS, Command-Specific Tone Duration............................................................................... 179
11.2.9 +MAPATH, Audio Path................................................................................................................180
11.2.10 +MAVOL, Volume Setting........................................................................................................ 181
11.2.11 + MMICG, Microphone Gain Value.........................................................................................183
11.2.12 +MATONEļ¼Start or stop the tone play,and the tone plays only once....................... 183
12 GPRS................................................................................................................................................................... 185
12.1 GPRS Functionality................................................................................................................................ 185
12.2 GPRS Commands.................................................................................................................................. 185
12.2.1 +CGCLASS, GPRS Mobile Station Class...............................................................................186
12.2.2 +CGDCONT, Define PDP Context........................................................................................... 187
12.2.3 +CGQMIN, Quality of Service Profile (Min Acceptable)....................................................... 189
12.2.4 +CGQREQ, Quality of Service Profile (Requested)..............................................................191
12.2.5 +CGATT, GPRS Attach or Detach............................................................................................ 193
12.2.6 D*99, Request GPRS Service "D"............................................................................................194
12.2.7 +CGACT, PDP Context Activate or Deactivate...................................................................... 196
12.2.8 +CGPADDR, GPRS Addresses................................................................................................197
13 TCP/IP..................................................................................................................................................................199
13.1 Basic Mode.............................................................................................................................................. 199
13.1.1 +MIPCALL, Create a Wireless Link......................................................................................... 199
13.1.2 +MGAUTH, Set type of authentication.................................................................................... 201
13.1.3 +MIPOPEN, Open a Socket (UDP or TCP)............................................................................202
13.1.4 +MIPCLOSE, Close a Socket................................................................................................... 205
13.1.5 +MIPSETS, Set Size and Timeout for Automatic Push........................................................ 206
13.1.6 +MIPSEND, Send Data..............................................................................................................208
13.1.7 +MIPPUSH, Push Data into Protocol Stack........................................................................... 210
13.1.8 +MIPFLUSH, Flush Data from Buffers.....................................................................................211
13.1.9 +MIPRUDP, Receive Data from UDP Protocol Stack........................................................... 212
13.1.10 +MIPRTCP, Receive Data from TCP Protocol Stack..........................................................212
13.1.11 +MIPDSETS, Set Size and Timeout for Output Received Data........................................213
13.1.12 +MIPSTAT, Status Report........................................................................................................214
13.1.13 +MIPCONF - Configure Internal TCP/IP Stack....................................................................215
13.1.14 +MPING, Start Ping Execution (ICMP Protocol)................................................................. 218
13.1.15 +MPINGSTAT, Status Update for +MPING Execution....................................................... 221
13.1.16 +MSDNS, Set DNS IP Address.............................................................................................. 223
13.1.17 +MIPODM, Open a Socket (UDP or TCP) in Online Data Mode......................................225
13.1.18 +MIPXOFF, Flow Control - Xoff.............................................................................................. 228
13.1.19 +MIPXON, Flow Control - Xon................................................................................................228
13.1.20 +MIPDNS, Resolve Domain name........................................................................................ 228
13.1.21 +MIPNTP, Synchronize the local time via NTP....................................................................229