3. Operation
3-8
February 2001
3160-A2-GB21-90
Table 3-4.
Data Port LEDs
Name
Color
Meaning
DTR
Green
Monitors the state of interchange circuit CD (CCITT 108/1, /2)
–
Data Terminal Ready received from the synchronous data DTE.
ON: DTR is being asserted by the synchronous data DTE.
OFF: DTR is not being asserted.
TXD
Yellow
Monitors activity on interchange circuit BA (CCITT 103)
–
Transmitted Data. This is the data sent from the synchronous
data DTE to the data port on the DSU/CSU.
ON: Ones are being received from the synchronous data DTE.
OFF: Zeros are being received from the synchronous data DTE.
CYCLING: Both ones and zeros are being received from the
synchronous data DTE.
RXD
Yellow
Monitors activity on interchange circuit BB (CCITT 104)
–
Received Data. This is data sent to the synchronous data DTE
from the data port on the DSU/CSU.
ON: Ones are being sent to the synchronous data DTE.
OFF: Zeros are being sent to the synchronous data DTE.
CYCLING: Both ones and zeros are being sent to the
synchronous data DTE.
CTS
Yellow
Monitors the state of interchange circuit CB (CCITT 106)
–
Clear-to-Send sent to the synchronous data DTE.
ON: CTS is being asserted by the DSU/CSU.
OFF: CTS is not being asserted.
RTS
Yellow
Monitors the state of interchange circuit CA (CCITT 105)
–
Request-to-Send received from the synchronous data DTE.
ON: RTS is being asserted by the synchronous data DTE.
OFF: RTS is not being asserted.
Содержание 3160-A3
Страница 16: ...About This Guide x February 2001 3160 A2 GB21 90...
Страница 24: ...1 Introduction 1 8 February 2001 3160 A2 GB21 90...
Страница 100: ...3 Operation 3 66 February 2001 3160 A2 GB21 90...
Страница 142: ...A Front Panel Menu A 2 February 2001 3160 A2 GB21 90...
Страница 198: ...C Configuration Options C 54 February 2001 3160 A2 GB21 90...
Страница 246: ...E SNMP MIB Objects E 32 February 2001 3160 A2 GB21 90...
Страница 280: ...H Asynchronous Terminal Operation H 24 February 2001 3160 A2 GB21 90...
Страница 282: ...I Equipment List I 2 February 2001 3160 A2 GB21 90...