Matrix Telecom SARVAM UMG System Manual page 256

If you want to de-assign the Hardware Slot and Port, enter '00' in both fields. By default, Hardware Slot-
Port is 00–00.
• Activity Status displays the port activity status — Module Initialization, SIM PUK Required, SIM PIN
Wrong, SIM Absent, SIM Present, Network Absent, Network Present.
General
• Click General to expand.
• If you have enabled SIM PIN protection on the SIM Card, in SIM PIN, enter the same SIM PIN value (4 to
8 digits). Default: Blank.
• If the wrong SIM PIN is entered thrice in a row, by a user, the SIM will be locked and will ask for the
Personal Unlock Keyword (PUK).
• SIM PIN is not set to default or does not change, if SARVAM UMG is set to default or when you
upgrade/downgrade firmware.
• You can adjust the Microphone Gain (Tx) Gain of the Mobile Port to improve the audibility of the
transmitting speech from SARVAM UMG. Select the desired Tx Gain — Very Low, Low, Normal, High
and Very High. Default: Normal.
• You can adjust the Speaker Volume (Rx) of the Mobile Port to improve the audibility of incoming speech.
Select the desired Rx Gain — Very Low, Low, Normal, High or Very High. Default: Normal.
• The Frequency Band Selection (MHz) supported by the GSM networks varies from country to country.
You can select the Frequency Band used by the GSM Service Provider(s) in the country where SARVAM
UMG is installed. The supported bands are — 900,1800,1900,850+1900, 900+1800 and All bands.
Default: All Bands.
Select 850 + 1900 GSM frequency band for countries which support both 850 and 1900 MHz frequencies
for GSM network.
Matrix SARVAM UMG System Manual 250