DBL Technology Co., Ltd. GoIP User Manual
www.dbltek.com Technical Support: support@dbltek.com
The top table shows a number of GSM parameters which are useful to determine if the GSM channels in the
gateway are working properly.
1. Remote SIM - This tells if Remote SIM function is used or not. "DISABLE" means using the local SIM cards
that are inserted to the device.
2. SIM - "Y" means the corresponding GSM module is able to access the designated SIM card properly.
3. GSM - "Y" means the corresponding GSM module registers to the GSM network successfully.
4. RSSI - Received Signal Strength Indicator. Its normal range is from 0 to 31 which represents a signal level
ranging from -113 dBm to -51 dBm; each increment in rssi values means 2 dBm increment. 99 means
that the signal level is unknown or undetected.
5. GPRS Login - "Y" means access to a GPRS network. This status is obtained from the command AT+CREG.
6. GPRS Attach - "Y" means GPRS Attach is successful and is ready for PDP. This status is obtained from the
command AT+CGATT.
7. Carrier - This shows the name of the current GSM carrier.
8. GSM BSC mode - This shows the current setting for the GSM BSC mode which determines how the device
selects a base station. For more information, please refers to the section 3.3.15.
9. Cell ID - This shows the Base Transceiver Station (BTS) ID.
10. LAC - This shows the Location Area Code.
The bottom table shows more detailed information on the onboard GSM modules and the SIM card inserted.
1. Module - The model number of the GSM module.
2. Firmware Ver - The version number of the firmware installed in the module.
3. SIM Number - The GSM number that is assigned to the SIM card. User must enter this number manually.
4. IMEI - International Mobile Station Equipment Identity
5. IMSI - International Mobile Subscriber Identity
6. ICCID - Integrated Circuit Card Identifier
5.2.4 SIM Call Forward
The table below lists the current call forward settings of the SIM card assigned to the corresponding channel.
There are 3 possible status:
1. ON - This means that the corresponding Call Forward mode is enabled and this setting is sent to the GSM
network when a new GSM registration takes place.
2. OFF - This means that the corresponding Call Forward mode is disabled and this setting is sent to the GSM
network when a new GSM registration takes place.
3. Not Set - This means that there is no change to the current Call Forwarding mode and nothing is sent to
the GSM network when a new GSM registration takes place. This is useful by leaving the current Call
Forward mode unchanged.
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