Verilink NCM 2000 (880-502623-001) Product Manual - Manual (Page 64)

Circuit Manager
4-8 Verilink NCM 2000
Table 4-3 Table 4-3 Table 4-3 Table 4-3 Backup and Dial-Backup Options Backup and Dial-Backup Options Backup and Dial-Backup Options Backup and Dial-Backup Options
TAC Module
Differences
When a circuit uses a TAC 2010 T1 CSU module for the source port,
the Source Port Channels option need not be entered. When the
Destination Port Channels is entered, like values are used for the
TAC 2010. A different menu appears as shown in
Figure 4-4 .
Figure 4-4 Add Circuit Menu for TAC 2010
Key Description Notes
A Primary circuit. The name of the (previously
configured) circuit to be protected.
Enter the name of the Primary circuit which this
Backup or Dial-Backup circuit is to protect.
SE Source Error Mask. Used to select which
possible alarm conditions on the source port
will be used to trigger a switch to backup or
dial-backup.
Some of these conditions indicate a major
failure of a circuit. A network port, for example,
is completely out of service when a Loss Of
Signal or Loss Of Frame condition exists.
Severely Errored Seconds on a network port is a
different case as the facility may still be in
service although it is seriously impaired.
The user is able to select one, more than one, all
or none of these possible triggers which will be
used to determine when a backup/dial-backup
switch will be made.
Enter the numbers shown for the conditions upon
which a switch to backup/dial-backup is to be
made.
For a T1 port possible selections are: AIS, yellow
alarm received, Loss Of Signal, Loss Of Frame or
Severely Errored Seconds/Unavailable Seconds
threshold exceeded. For a data port choices are
presented for leads which might be asserted by
the DTE: RTS or DTR. In the less common case of
a data port configured for DTE mode, it will
switch on CTS or DSR, if so configured.
Multiple selections can be made by using a
comma between the digits. For example, to
switch on any of the possible T1 port error
conditions enter "1,2,3,4,5".
DE Destination Error Mask: as above, the user
selects from a list of possible errors on the
Destination Port which may trigger a
backup/dial-backup switch.
Multiple selections can be made by using a
comma between the digits. For example, to
switch on any of the possible T1 port error
conditions enter "1,2,3,4,5".
O Dial Backup Timeout: the maximum length of
time which a circuit will be kept on the backup
or dial-backup path. Upon expiration of this
time period the Circuit Manager will revert to
the primary circuit.
A series of three prompts are presented. First the
user sets a maximum number of days, then
maximum hours, then maximum minutes up to a
total of 5 days, 23 hours and 59 minutes.
G Error Clear Mask: list of possible alarm
conditions which must not exist before
backup/dial-backup is terminated. User selects
from a list.
These need not exactly match the choices made
above for Source Error Mask or Destination Error
Mask. Separate multiple entries with commas:
1,2,3,4.
Add Circuit -- [1,1] NCM 2000 Firmware 4.17 --
N) Name: ckt1 P) Priority: low
T) Type: perm M) Mode: 64k
SP) [1,8] TAC NET DP) [1,9] DIU DAT2
SM) --src port chn-- DM) --dst port chn--
( not applied ) 01 02 03 04 05 06 07 08
( not applied ) 09 10 11 12 13 14 15 16
( not applied ) 17 18 19 20 21 22 23 24
( not applied )
U) Bus: Non ->>>--->>>---Circuit Inactive---<<<---<<<-
S) Setup X) Exit
[12.13.14.15] [1,1] NCM 2000 >