Rate, Interface, Antistreaming timer – Verilink PRISM 4101 (34-00230) Product Manual User Manual
Page 29: Circuit assurance, Rts/cts delay
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Rate
Selects the DTE interface line rate. The choices are 2.4, 4.8, 9.6, 19.2, 38.4, 54,
56, 57.6, 62, or 64 kbps. The available rates depend on the mode and the DTE
format. The default is 56 kbps in STD mode.
Interface
This display- only field shows which electrical interface is active (either the V.35 or
the RS-232).
Antistreaming Timer
This timer is used to prevent a streaming DTE, on a tributary DSU in a multi-point
circuit, from locking up the circuit. If the RTS lead from the DTE stays constantly
active for the anti-streaming time, the unit shuts off data transmission into the
network. Whenever RTS goes inactive, the anti-streaming timer is reset. The timer
can be turned Off or set for 10, 30, or 60 seconds.
DSR
Data Set Ready is output from the unit to the DTE. Its behavior can be set to
Test>Off where DSR is On except when the unit is in test or set to Forced On all
the time regardless of any unit condition.
DCD
Data Carrier Detect is output from the unit to the DTE. Its behavior can be set to
Idle>Off where DCD is On except when the unit is receiving idle code, OOS code,
OOF code, or LOS from the network or Forced On all the time regardless of any
unit condition.
RTS
Request To Send is an input to the unit from the DTE. Clear To Send is an output
from the unit to the DTE. The behavior of RTS and CTS is set as follows. In the
Normal setting, the unit reacts to RTS from the DTE. When RTS is On, the unit
transmits data normally and turns CTS On (depending on the setting of Circuit
Assurance and after the delay set by the RTS/CTS Delay option). When RTS is
Off, the unit transmits idle code to the network and turns CTS Off. In the Forced
On setting, the unit ignores the state of the RTS lead from the DTE and forces it
On internally and forces CTS On.
Circuit Assurance
This option allows the CTS control lead to respond to the data signal from the
network. With Enabled selected, the unit will turn Off the CTS lead when
receiving idle code (for example, if DCD is Off). With Disabled selected, the state
of the CTS control lead is not affected by data signal from the network.
RTS/CTS Delay
This selection allows the user to choose the amount of delay on RTS to CTS
transition. When RTS Control is set to Normal, CTS will follow the state of RTS