54
14 January 2021, SmartScanIS User’s Guide for Union Pacific, EUD-2016026-00 Rev.2
4.5.4 Telephone Connection (Phone Jack)
The PHONE jack is used to plug a telephone into the modem for voice communications.
When you do so, the telephone shares the same telephone line as the modem. This jack is
provided as a convenience. It is rarely used.
4.5.5 Status LEDs
On the module cover are 10 status LEDs. The table below describes what each lit LED
means.
LED
Meaning When Lit
14
By itself, lights when the modem is operating at 14,400 bps. When lit with LED 19,
the modem is operating at 16,800 bps. When lit with LED 96, the modem is
operating at 12,000 bps.
19
By itself, lights when the modem is operating at 19,200 bps. When lit with LED 14,
the modem is operating at 16,800 bps.
96
By itself, lights when the modem is operating at 9600 bps. When lit with LED 14, the
modem is operating at 12,000 bps. If no speed LED lights, the modem is operating at
less than 9600 bps.
CD
Lights when valid carrier signal from another modem is detected.
EC
Lights when the modem is in error-correction mode. Flashes when compression is
activated.
FX
Lights when the modem is in fax mode.
OH
Lights when the phone line is off-hook, which occurs when the modem is dialing,
online, or answering a call. Flashes when the modem is pulse dialing.
RD
Flashes when data is being received.
TD
Flashes when data is being transmitted.
TR
STC's firmware configures the modem to ignore this light. So, it is never lit.
PHONE Jack
PHONE Jack
Summary of Contents for SmartScanIS
Page 1: ...EUD 2016026 00 Rev 2 SmartScanIS User s Guide for Union Pacific 14 January 2021...
Page 82: ...82 14 January 2021 SmartScanIS User s Guide for Union Pacific EUD 2016026 00 Rev 2...
Page 90: ...90 14 January 2021 SmartScanIS User s Guide for Union Pacific EUD 2016026 00 Rev 2...
Page 130: ...130 14 January 2021 SmartScanIS User s Guide for Union Pacific EUD 2016026 00 Rev 2...
Page 258: ...258 14 January 2021 SmartScanIS User s Guide for Union Pacific EUD 2016026 00 Rev 2...
Page 376: ...376 14 January 2021 SmartScanIS User s Guide for Union Pacific EUD 2016026 00 Rev 2...
Page 380: ...380 14 January 2021 SmartScanIS User s Guide for Union Pacific EUD 2016026 00 Rev 2...