ZyXEL Elite 2864 User Guide - Page 152

S49b7 tells the modem where it is installed. If S49.7=0, the modem is installed in an office connected to a normal telephone line; if S49.7=1, it means the modem is a mobile unit connected to a cellular phone. When a ZyCellular modem calls or answers another modem, it will indicate its cellular capability and whether it is using a cellular phone. If both sides have the ZyCellular capability and at least one side is using a cellular phone, the connection will automatically be a cellular mode connection such as it would be if it were using CELL 14400 mode. If one side is a normal non-cellular modem, the connection will automatically be a normal modem mode. If a manual transmission power setting is desired, set S43.2=1 to disable automatic transmission power adjustment and use S49 bits 0-3 to set the transmission power to -9 to -24 dBm. If a cellular mode connection is desired, set S43.3=0 to enable the cellular mode connection. The default for this option is to be disabled (S43.3=1). You can also send and receive faxes on cellular links by setting S49.7=1 on the ZyCellular modem that is using a cellular phone. Now your modem can send and receive faxes to and from fax machines and other fax modems. Cellular Modem Installation The most difficult part of cellular modem installation is connecting the modem to the cellular phone. There is no standard on the interface and connector type that a cellular phone should use or provide. Every cellular phone maker has its own interface design. There isn't a standard way to connect a modem to a different brand of cellular phone. Some vendors have made a specific adapter for each model of cellular phone that will convert a specific cellular phone's interface to a standard telephone company's 2-wire phone interface. A cellular modem can connect to a cellular phone using such an adapter. If you are using a cellular phone data interface adapter, the following figures illustrate three installation examples. The figures are illustrated with a U-1496P model. You can use a 2864 series modem, such as the Omni 288S, in the same way. 14-4