Verilink QPRI 2921 (880-503143-001) Product Manual - Manual (Page 42)

Configuring the QPRI 2921 Via the NCM 2000 Craft Interface
3-8 Verilink QPRI 2921
NDn Network Density: Use this option to specify the type of network density
enforcement to use with PRI line coding. Digital transmissions over public
switched telephone network lines cannot support long strings of zeros
(repeaters and clocking devices lose synchronization). Therefore, the
density algorithms ensure that a minimum pulse density is met to ensure
stable system timing.
Choose one of the following if using 64K AMI. Note that these options are
ignored with B8ZS line code:
None: does not insert a one. Use this option with B8ZS or a 56K channel.
Also recommended for ISDN capability.
80 zeros: inserts a one into every string of more than 80 consecutive zeros.
15 zeros: inserts a one into every string of more than 15 consecutive zeros.
12.5% & 80 zeros: inserts a one into every string of eight or more
consecutive zeros when the average density of ones fall below 12.5% or if
there are more than 80 consecutive zeros.
TR 62411: inserts a one into every string of more than 15 consecutive
zeros or when there are less than a minimum number of N ones in every
window of 8(N+1) data bits (12.5%). N can be any value from 1 to 23. This
option is the same as 12.5% + 15 zeros.
1) NONE
2) 80 zeros
3) 15 zeros
4) 12.5% & 80
zeros
5) TR 62411
NLn Network Initiated Loop: Use this option to specify if you wish to allow your
QPRI to be remotely put into a line loopback.
Yes or No
(Y/N)
An Alarm Declare Time (sec): Use this option to indicate how many seconds
will elapse before a message regarding a problem is displayed.
0..127 seconds
DLn FDL Enable/PRM Enable: Facility Data Link (FDL). The ESF Facility Data Link
is used to transmit performance registers and controls, error events, and
loopback controls. The FDL uses 4 kbit/s of bandwidth to transmit
messages. This option only enables or disables the FDL. It only reports if
you have the Performance Report Message Command/Response (PRM C/R)
bit enabled or disabled. To change this option’s status or configuration,
select the FDL Configuration command ( F ) and use the Cn (PRM C/R bit)
option.
Note: Enabling this option is meaningless for ports in SF mode.
Yes or No
(Y/N)
En Enable Inband ISDN: Turns on access to one of the channels in the option
fields for inband communication. To receive and transmit remote
configuration and diagnostic information, the channel has to be enabled on
both ends.
This command is used to enable an inband channel or ISDN D-channel, or
disable both. An inband channel uses a timeslot (DS0) to send and recieve
remote configuration and diagnostic information. An ISDN D-channel is
used for ISDN call set-up and other messages. Both ends must have the
same option selected. Select the Inband Timeslot option below before
implementing this command.
1) Inband
enable
2) ISDN enable
3) Both disable
Sn Inband Timeslot: Select one of the 24 timeslots for inband management
before enabling the inband ISDN as described above. ISDN normally uses
timeslot 24 for this function.
1-24
F FDL Configuration: Brings up a submenu of choices. Figure 3-5, Table 3-6.
Note: This option and associated submenus are meaningless for ports in SF
mode.
T Timing: This brings up the Configuration Menu (Timing Options), Figure
3-6, Table 3-7.
X Exit this Screen: Returns you to the Configuration Menu, Figure 3-3, Table
3-4.
Command Description Options