[. . . ] GSM Desktop Phone is intended for use where wired communications infrastructure is not available or not possible. [. . . ] It also implements advanced call services features making it suitable for office use: call forwarding, call barring, call waiting. Large LCD screen allows for clear reading of text messages and menu navigation. 850 g Sound and tone features Busy tone Dial tone at off hook Ringer tone 10 Ring tones 16 SMS tones Ring tone volume adjustment SMS tone volume adjustment Speech volume adjustment SMS Receive Alert Key tone volume on / off Power supply Mains adaptor: 100 - 240 V AC / 5 V DC Power consumption when talking 2W (peak) Power Consumption stand by (300mW) Temperature and humidity Operation 0º to 55º C Storage temperature -20º to 80º C Humidity 10% to 90% Storage humidity 5% to 95% Other Network Dependent Features Call Forwarding Call Barring Call Waiting Calling line presentation restriction Calling line identification presentation External omni directional antenna (SMA) Antenna Gain 2dBi Port for firmware update HQ JSC Teltonika Saltoniskiu st. 10c LT-08105, Vilnius Lithuania Tel +370 5 212 74 72 (Lithuania) Tel +370 5 265 73 60 (International Calls Landline) Tel +370 5 265 73 61 (Landline) Fax +370 5 276 13 80 Email info@teltonika. lt Web www. teltonika. lt [. . . ] 850 g Sound and tone features Busy tone Dial tone at off hook Ringer tone 10 Ring tones 16 SMS tones Ring tone volume adjustment SMS tone volume adjustment Speech volume adjustment SMS Receive Alert Key tone volume on / off Power supply Mains adaptor: 100 - 240 V AC / 5 V DC Power consumption when talking 2W (peak) Power Consumption stand by (300mW) Temperature and humidity Operation 0º to 55º C Storage temperature -20º to 80º C Humidity 10% to 90% Storage humidity 5% to 95% Other Network Dependent Features Call Forwarding Call Barring Call Waiting Calling line presentation restriction Calling line identification presentation External omni directional antenna (SMA) Antenna Gain 2dBi Port for firmware update HQ JSC Teltonika Saltoniskiu st. [. . . ]