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AT Command Reference
80-99208-1 Rev. D 6-71
Note
As shown in the syntax above, any of the parameters can be optionally
specified. Any unspecified value is left unchanged. Optional parameters
must be separated by commas. The commas act as place holders (in
the command parser) for the missing optional parameters.
If <tcpmod> is equal to one, the values in the rest of the
variables are put into effect. If
<tcpmod> is set to zero, the rest
of the values entered into the AT command are ignored, and
the default values are restored to the internal variables.
Valid Value(s)
<tcpmod>
<lowertxmss>
<tcpmod> Defines whether or not to use the default
TCP values, or to use the values passed in.
<lowertxmss> Sets the lower bound for outgoing TCP
packet sizes.
<uppertxmss> Sets the upper bound for outgoing TCP
packet sizes. The variable can be
overwritten during TCP negotiation if the
other end of the connection sets a TCP MSS
lower than this value.
<rxmss> Sets the size for the incoming TCP MSS.
<minrto> Sets the minimum value for the range used
to calculate the retransmit timeout.
<maxrto> Sets the maximum value for the range used
to calculate the retransmit timeout.
<minato> Set the minimum value for the range used
to calculate the acknowledgment timeout.
<maxato> Sets the maximum values for the range
used to calculate the acknowledgment
timeout.
<tcpmaxbackoff> Sets the number of TCP backoffs allowed
before tearing down the connection. A value
of zero will keep the phone from tearing
down the call based on the number of TCP
backoffs.
0 Use the default values for the TCP stack.
1 Use the values passed in for the TCP stack.
0-1500 Lower bound for the transmit MSS
- TABLE OF CONTENTS 2
- Table of Contents 4
- 80-99208-1 Rev. D v 4
- 80-99208-1 Rev. D vii 6
- 80-99208-1 Rev. D ix 8
- LIST OF FIGURES 10
- LIST OF TABLES 12
- REVISION HISTORY 14
- ABOUT THIS MANUAL 16
- How This Manual Is Organized 17
- Notational Conventions 18
- Abbreviations and Acronyms 19
- About This Manual 20
- 80-99208-1 Rev. D xxi 20
- Related Documentation 22
- Cautions and Warnings 23
- 1 GETTING STARTED 24
- GSP-1620 Modem Overview 25
- 1-4 80-99208-1 Rev. D 27
- Getting Started 28
- 80-99208-1 Rev. D 1-5 28
- Asynchronous Data 28
- Conceptual Overview 29
- 80-99208-1 Rev. D 1-7 30
- 80-99208-1 Rev. D 1-9 32
- 1-10 80-99208-1 Rev. D 33
- 2 QUICK BENCH SET-UP 34
- A Quick Tour of the Modem 35
- Quick Bench Set-Up 36
- 80-99208-1 Rev. D 2-3 36
- Connecting the Modem Cables 37
- Connecting Antenna Cables 39
- 005AA_01 41
- RX Antenna connector 43
- TX Antenna connector 43
- (labeled on antenna base) 43
- O-Ring groove 43
- Mounting the Modem 44
- Grounding the System 44
- Providing Power to the Modem 45
- 80-99208-1 Rev. D 2-13 46
- Testing the Modem Setup 49
- Where to Go Next 53
- 3 SERVICE-PROGRAMMING MODEMS 54
- UTPST Overview 55
- Using the UTPST 55
- Bulk-Programming Modems 60
- Upgrading Modem Software 60
- 4 MAKING SIMPLE DATA CALLS 62
- Entering Online-Command Mode 66
- 4-6 80-99208-1 Rev. D 67
- DEVELOPING MODEM APPLICATIONS 68
- Recommended Development Tools 69
- SCADA Application Components 69
- 80-99208-1 Rev. D 5-3 70
- Modem Application Scenarios 72
- 5-6 80-99208-1 Rev. D 73
- Working with Modem Features 74
- Port Arbitration Behavior 76
- AT Command Processing Modes 79
- 80-99208-1 Rev. D 5-13 80
- Globalstar Satellite Service 83
- Short Messaging Service (SMS) 84
- SMS Message Field Information 85
- SMS AT Commands 85
- Globalstar Service Alerts 86
- Service Status Message 87
- Using Packet Data 88
- Data Rate and Throughput 89
- Dynamic IP Addressing 90
- Fixed IP Addressing 91
- Finding IP Addresses 91
- Dormant Mode Service 92
- ■ Use the ATD#777 command 94
- 80-99208-1 Rev. D 5-29 96
- Using Asynchronous Data 97
- Integrator’s Reference Manual 101
- 5-34 80-99208-1 Rev. D 101
- 80-99208-1 Rev. D 5-35 102
- +++ (surrounded by 104
- 5-38 80-99208-1 Rev. D 105
- 6 AT COMMAND REFERENCE 106
- AT Commands Overview 112
- Basic AT Commands 113
- Results Returned 114
- Command Echo (E) 114
- Get Info (I) 114
- Monitor Speaker Loudness (L) 115
- Monitor Speaker Mode (M) 116
- Select Pulse Dialing (P) 116
- Result Code Suppression (Q) 117
- Select Tone Dialing (T) 118
- DCE Response Format (V) 118
- Basic Action Commands 123
- Repeat Last Command (A/) 124
- Dial (D) 125
- Hook Control (H) 127
- Basic S-Registers 129
- Automatic Answer (S0) 130
- Comma Dial Modifier Time (S8) 134
- Silent Retry Timeout (S777) 136
- is assumed to be 1 138
- Set Character Framing (+ICF) 140
- Set Local Flow Control (+IFC) 141
- Online-Command Mode Commands 145
- Dormant Mode Commands 153
- Packet No Dial ($QCPKND) 155
- SMS Commands 156
- SMS Print ($QCSMSP) 157
- See Table 6-5 158
- SMS Lock ($QCSMSL) 161
- SMS Alert ($QCSMSA) 162
- SMS Info ($QCSMSI) 163
- Error Log Services Commands 164
- Clear Error Log ($QCCLR) 165
- Service Status Commands 166
- Service Status ($QCSTATUS) 167
- Time of Day ($QCTOD) 169
- Markov Statistics ($QCMSTATS) 173
- Set Mode ($QCMODE) 174
- TCP Stack Changes ($QCTCP) 175
- is set to zero, the rest 176
- INTEGRATING GSP-1620 MODEMS 180
- OEM PRODUCTS 180
- Modem Mechanical Description 182
- 7-4 80-99208-1 Rev. D 183
- 80-99208-1 Rev. D 7-5 184
- Modem Antenna Connectors 185
- Data and Control Ports 185
- Control Port Signals 187
- Data Port Signals 188
- Diagnostic Port 191
- Diagnostic Port Pinouts 192
- DC Power 194
- Surge Protection 195
- EMI Filtering 195
- Power Consumption 195
- Power-On 196
- Grounding 197
- Modem Mounting Guidelines 198
- 80-99208-1 Rev. D 7-21 200
- Mounting Antennas On-Site 201
- Antenna Dimensions and Weight 202
- Antenna Depiction 202
- 7-24 80-99208-1 Rev. D 203
- Antenna Cable Specifications 204
- when calculating 206
- Securing Antenna Cables 207
- Mounting Multiple Antennas 208
- Environmental Specifications 209
- ENVELOPE 210
- NON-OPERATIONAL ONLY 210
- CONSTANT 39.1C DEW POINT 210
- Altitude 211
- Vibration 211
- Mechanical Shock 213
- Acoustic Noise 213
- RF Connector Durability 214
- Materials 214
- Shipping 214
- Temperature/Humidity 214
- Thermal Radiation 215
- Icing/Freezing Rain/Snow 216
- 7-40 80-99208-1 Rev. D 219
- 8 TROUBLESHOOTING 220
- ■ Both the AC power 221
- ■ DTR is not asserted on a 221
- ■ Command echoing has been 221
- ■ Make sure the baud rate in 221
- A GLOBALSTAR BACKGROUND 222
- Space Segment 223
- Ground Segment 223
- Coverage 223
- Globalstar Background 224
- 80-99208-1 Rev. D A-3 224
- Carriers 225
- 80-99208-1 Rev. D A-5 226
- A-6 80-99208-1 Rev. D 227
- RF CERTIFICATION/RESTRICTIONS 228
- B-2 80-99208-1 Rev. D 229
- RF Restrictions 230
- Pacemakers 231
- Hearing Aids 232
- Other Medical Devices 232
- B-6 80-99208-1 Rev. D 233
- C WARRANTY 234
- C-2 80-99208-1 Rev. D 235
- D PRODUCT SUPPORT 236
- Order Fulfillment Information 237
- Website Information 238
- Contact information 239
- Product Support 240
- 80-99208-1 Rev. D D-5 240
- D-6 80-99208-1 Rev. D 241
- E SPECIFICATION SUMMARY 242
- E-2 80-99208-1 Rev. D 243
- [1] q = 0 is zenith 245
- [3] at Tsky = 200 K 245
- 80-99208-1 Rev. D Index-1 246
- Index-2 80-99208-1 Rev. D 247
- 80-99208-1 Rev. D Index-3 248
- Index-4 80-99208-1 Rev. D 249
- 80-99208-1 Rev. D Index-5 250
- Index-6 80-99208-1 Rev. D 251
- 80-99208-1 Rev. D Index-7 252
- Index-8 80-99208-1 Rev. D 253
- 80-99208-1 Rev. D Index-9 254
- Index-10 80-99208-1 Rev. D 255
- 80-99208-1 Rev. D Index-11 256
- Index-12 80-99208-1 Rev. D 257
- 80-99208-1 Rev. D Index-13 258
- Index-14 80-99208-1 Rev. D 259
- 80-99208-1 Rev. D Index-15 260
- Index-16 80-99208-1 Rev. D 261
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