[. . . ] TECOM User Manual Fixed Wireless Terminal MT-9960 900/1800 MHz Dual Band 850/1900 MHz Dual Band GSM/GPRS Introduction Thank you for choosing MT-9960, TECOM Fixed Wireless Terminal. TECOM's MT-9960 is an advanced fixed GSM-cellular terminal that provides selectable dual-band GSM and PSTN service. [. . . ] Check with your service provider when you get your SIM card. Figure 1 Install the Antenna 1. Plug one end of the antenna into the jack labeled "ANT" in the rear panel of the MT-9960. Choose a location that can receive better Cellular signal; above ground and as close to windows as possible. You can know the Cellular signal from the "RSSI" LED on the front panel. (See LED Status for the details) Figure 2 Connect the phone or PBX to MT-9960 1. Plug one end of the standard phone cord into the trunk port of PBX or phone 2. Plug the other end of the phone cord to the jack labeled "PHONE " in the rear panel of the MT-9960 (See Figure 3). Plug the other end of the Line cord into the jack labeled "LINE" in the rear panel of the MT-9960 (See Figure 3). Figure 3 Connect the Power 1. Plug the power adapter into the jack labeled "DC IN 7. 5V" in the rear panel of the MT-9960 (See Figure 4). Note: If to use external battery, Acid-lead battery of 6V/3-54Ah is recommended. Figure 4 SIM PIN Setting If your phone requires the SIM PIN 1 you will need to program it before making or receiving calls. To program the SIM PIN 1: 1. ) Pick up the handset and press: *#***8326# 2. ) Dial tone is heard 3. ) Press *#91#SIM PIN# 4. ) A confirming tone is heard. Polarity Reversal To send the polarity reversal signal when Polarity reversal is required for the PBX: 1. ) Pick up the handset and press: *#***8326# 2. ) Dial tone is heard 3. ) Press*#54#1# 5. ) A confirming tone is heard. Caller I. D. [. . . ] NOT ACTIVE steady on Slow flash fast flash off RSSI (-75dbm ~ -51dbm): good RSSI (-87dbm ~ -77dbm): average RSSI (-99dbm ~ -89dbm): poor RSSI (-113dbm ~ -101dbm): bad Data Connection (Option--setup CD is required) The MT-9960 features a RS-232 port for connection to a PC. It allows for traditional dial-up type connection or GPRS (General Packet Radio Service) connection to access the internet. [. . . ]