SECTION 3 | Terminal Emulation Menu Screens |
"TXRate, is the data rate (in Mb/s) of the last message transmitted by the Lucent radio. The default TXRate of 2 Mb/s and will be displayed when the terminal starts up and has not transmitted a frame yet. High speed Lucent radio’s are capable of data rates of 1 Mb/ s, 2 Mb/s, 5.5 Mb/s, and 11 Mb/s. The TxRate 5.5 Mb/s data rate is displayed as 6 Mb/s. This occurs because the Lucent radio reports an integer value for current transmission data rate, so the data rate of 5.5 Mb/s is rounded up to 6 Mb/s.
Several factors influence the rate at which a frame is transmitted. First, you can configure the radio’s trans- mission rate in the net.cfg file. The keyword Trans- mit_Rate in the net.cfg holds a numeric value indi- cating the transmission rate. Table 2 shows the Transmit_Rate values and their respective supported transmission rates that are available in the high speed Lucent radio’s.
The transmission rate is also affected by the charac- teristics of the RF link. If the radio encounters prob- lems sending a higher transmission rate because the RF link is weak, busy, or noisy, then the radio may retry the transmission at a lower data rate. Therefore, the TxRate reported may be lower than the configured transmission rate. We only report the transmission rate of the most recent and successful transmission.
Table
Supported Transmission Rates for the High
Speed Lucent Radio’s
Value | Description |
1Fixed Low (1 Mb/s)
2Fixed Standard (2 Mb/s)
3ARS High (11 Mb/s = default)
6400
