IQ 710 System Manual
© 2002 ADTRAN, Inc.
61202800L1-1B
IQ 710
Section 4, User Interface Guide
Page 42
3.
MENU DESCRIPTIONS
C
ONFIGURATION
M
ENUS
C
ONFIGURATION
>DTE P
ORT
>P
HYSICAL
L
AYER
O
PTIONS
>F
LOW
C
ONTROL
This option determines how the IQ 710 responds to congestion during DBU operation.
C
ONFIGURATION
>DTE P
ORT
>P
HYSICAL
L
AYER
O
PTIONS
>CTS O
PTION
Set the CTS lead to
F
ORCED
O
N
or
F
OLLOW
RTS
.
C
ONFIGURATION
>DTE P
ORT
>P
HYSICAL
L
AYER
O
PTIONS
>DSR O
PTION
Set the DSR lead to
F
ORCED
O
N
or
N
ORMAL
.
C
ONFIGURATION
>DTE P
ORT
>P
HYSICAL
L
AYER
O
PTIONS
>CD O
PTION
Set the CD lead to
F
ORCED
O
N
or
N
ORMAL
.
N
ONE
- No flow control is used and the IQ 710 drops frames during severe congestion while in DBU
operation.
H
ARDWARE
- The IQ 710 varies the DTE TC clock as necessary to relieve congestion during DBU
operation.
FECN/BECN
-
While in a congested state during DBU operation, frames across the DBU PVCs have
FECN
or
BECN
set depending on the direction. Frames outbound to the network have
FECN
set,
while frames inbound to the attached DTE device have
BECN
set. This method is useful if the
attached DTE devices can respond to congestion notification.
F
ORCED
O
N
-
The CTS lead is always on and the RTS lead is ignored.
F
OLLOW
RTS -
The CTS lead is on when the RTS lead is on (and off when the RTS lead is off).
F
ORCED
O
N
-
The DSR lead is always on.
N
ORMAL
-
The DSR lead is off when the
IQ 710
is in a loopback test or an alarm state.
F
ORCED
O
N
-
The CD lead is always on.
N
ORMAL
-
The CD lead is off when the IQ 710 is in alarm state.