61202800L1-1B
IQ 710
Section 6, Configuration Guides
Page 213
© 2002 ADTRAN, Inc.
IQ 710 System Manual
DBU Criteria
1.
Press
<Escape>
once to get back to the
C
ONFIGURE
D
IAL
B
ACKUP
screen shown in Figure 22.
Select option 3,
DBU C
RITERIA
and press
<Enter>.
The menu screen shown in Figure 24 is dis-
played. The default values for the parameters on this screen are shown.
Figure 24. DBU Criteria Menu
2.
Press 1 to select
W
ITH
N
ETWORK
F
AILURE
; then press
<Enter>
. Press 2 and press
<Enter>
to select
E
NABLE
. 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.
Press 3 to select
W
ITH
PVC I
NACTIVE
; then press
<Enter>
. Press 2 and press
<Enter>
to select
E
NABLE
.
This is a global setting that affects all of the PVCs in the IQ’s DLCI table. 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 cir-
cuit. With this option enabled, the IQ 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 25.