User manual TRANSTEL GROUP ML500 MULTILINE CELLULAR SYSTEM

[. . . ] The ESNs must be provided to the cellular carrier for assignment of the cellular telephone numbers. Installation The ML500 is shipped fully assembled and is ready for rack-mounting. The mounting screws must be firmly tightened in order to secure the chassis to the rack. In the event that the above parts or packing lists are not available, this is a good time to record the ESNs from the serial number labels of each transceiver module. Make sure the power is off and remove any power, telephone, and antenna cables from rear of chassis. [. . . ] To program the ML500 module in TEST MODE, proceed as follows: Power the module interface board down by depressing the power key of the handset. Power the handset up by depressing the power key of the handset again. Follow the Motorola instructions for test mode programming of Series IV transceivers. Pressing * after the final programming step will program the transceiver with the number assigned by the cellular carrier. Power the handset down by depressing the power key and move the slide switch from TEST to NORMAL. Power the handset up again by depressing the power key and disconnect the handset from the PROGRAM jack. Note: It is possible to obtain a readout of the ESN when the unit has been placed in test mode. Enter #38# and the display of the handset will two sets of two-digit numbers. The first two indicate the register or line number (00), the next two the first two digits of the ESN (e. Depressing * on the handset advances to the next line (01) and the next two digits of the ESN. To exit this mode, power the handset down as described above under test mode programming. Antenna Alignment The test mode feature of the ML500 is also useful for positioning the cellular antenna for achieve maximum signal strength. The Motorola cellular handset must be plugged into the PROGRAM jack on the front panel of the ML500 module to do this. MLINS80730 Page 2 of 4 Operating Guide ML500 Place the module in test mode by depressing the power key of the handset such that it is turned on and then turned off again. Move the slide switch from NORMAL to TEST and turn the handset on again. Several sets of alternating numbers will be displayed on the display of the handset. The last three digits of a six-digit display indicate signal strength. These numbers which may range from 000 to as high as 250 are relative RSSI (received signal strength indication) numbers and can be calibrated if an appropriate dBm test meter is available. For acceptable transmission quality, the RSSI should indicate a value of 80 or more. To check for proper antenna position, move the antenna and check the readout. When using a directional antenna such as a Yagi or log periodic dipole array, rotate the antenna in 15-degree increments, pause to allow for the signal to stabilize, and check the readout. Depress the power key on the handset, move the slide switch from TEST to NORMAL and turn the handset on again by depressing the power key. Unplug the handset from the PROGRAM jack and proceed to the next step. Signal Indication Your ML500 modules are equipped with a circuit that monitors the cellular signal. [. . . ] This allows for the convenient check-out of the cellular operating mode. The switch-over is only for the duration of the call and will not occur if a call on the telco line is in progress. The module can also be forced to switch to the cellular operating mode from the telco mode by depressing the CELLULAR MODE switch. The module will stay in this operating mode for at least one minute or for the duration of the cellular call even if it exceeds one minute. [. . . ]