IQ 710 System Manual
© 2002 ADTRAN, Inc.
61202800L1-1B
IQ 710
Section 6, Configuration Guides
Page 226
DBU Criteria
1.
From the screen shown in Figure 36, press the down arrow to select
DBU C
RITERIA
. The menu
screen shown in Figure 37 is displayed. The default values for the parameters on this screen are
shown.
Figure 37. DBU Criteria Menu
2.
Use the right arrow to select
W
ITH
N
ETWORK
F
AILURE
; then press
<Enter>
. Use the down arrow to
select
E
NABLE
; then press
<Enter>
. This allows the IQ unit to enter dial backup in the event that the
network T1 line goes into alarm.
W
ITH
N
O
LMI
is enabled by default. With this option enabled, the IQ 710 unit will go into dial
backup when the
F
RAME
R
ELAY
S
IGNALING
S
TATE
is down.
3.
Use the down arrow to select
W
ITH
PVC I
NACTIVE
; then press
<Enter>
. Use the down arrow to
select
E
NABLE
; then press
<Enter>
.
This is a global setting that affects all of the PVCs in the IQ 710 DLCI table (under
N
ETWORK
PVC
O
PTIONS
). If this option is disabled, the unit will not enter DBU based on inactive DLCI regardless
of how the
DBU
ON
I
NACTIVE
parameter is set for each DLCI in the network PVC options. A PVC
is advertised as Inactive by the frame switch in the CO when there is a problem at the remote end
of the frame circuit. With this option enabled, the IQ 710 will attempt to establish a dial backup
call with the remote unit when its corresponding DLCI is advertised as Inactive.
Once these parameters have been configured properly, the
DBU C
RITERIA
screen should look
exactly like Figure 38.