Handbook:Alpha-numeric pager support:Troubleshooting

Each call placed by pagesend generates a session log similar to the logs created when transmitting facsimile. Tracing bit 0x0002 enables logging of the IXO or UCP protocol operation and 0x1000 enables more low-level tracing messages that display the binary data associated with the protocol messages (the latter is needed only when debugging subtle problems). Both bits should be set in the SessionTracing parameter for a modem.

The most common problems are not setting up the PagerSetupCmds properly for the modem and service provider and service providers that do not implement the IXO protocol according to the specification; usually by using odd instead of even parity.