NSE INTEGRATION WITH EXCHANGE
INSTALLATION AND USER MANUAL
19
Thus a single NSE can synchronise three co-located C-DOT SBMs
simultaneously.
4.3.2.
Procedure to Integrate C-DOT SBMs with NSE
a)
Set NSE as given in section 3.2, 3.3 & 3.4 in level 4 mode.
b)
Power on NSE. NSE shall be ready when AUTO, OUTPUT and FREE
RUN LED on NSE display panel get switched on.
c)
Make connections as shown in Fig. 4.2(a), 4.2(b), 4.2(c), 4.2(d), 4.2(e),
4.2(f), and 2.3.
d)
At CRP terminal of exchange, give command MOD-CLKSRC-EQPAG
to equip NSE in the system. Response on the terminal shall indicate
equipage of NSE. Also an URGENT alarm shall be raised on OOD
terminal and on ADP.
e)
Give SEL-CLK-SRC command to select NSE-0 (NSE clock available to
TSC-0 of SBM) or NSE-1 (NSE clock available to TSC-1 of SBM).
Response shall indicate the selection of NSE-0 or NSE-1 clock. Also the
‘URGENT’ alarm shall change to ‘NORMAL’ on OOD and ADP.
f)
Give DISPL-CRNT-CLK-SRC command to ensure that NSE-0/NSE-1 is
the selected clock in the system.
g)
Repeat (f) of 4.3.3.
Note :
Care must be taken that if NSE is to supply output to SBM local exchange, it
shall be set in level 4 mode before power on and if NSE is to supply output to a
SBM TAX then it shall be set in level 2 mode before power on. The Mode
settings are explained in section 3.3.
4.3.3.
Procedure for Integration of NSE with C-DOT Exchanges (MAX-L)
a)
Make connections as shown in Fig. 4.3(a), 4.3(b), 4.2(d), 4.2(e), 4.2(f),
and Fig. 2.3 for MAX-L exchange.
b)
At NSE check up the jumper settings at both NIO and NCP cards as
described in Chapter 3. Also set NSE in level 2 mode.
c)
Power on NSE and wait for 2 hours for warm-up. After 2 hours AUTO,
ACTIVE and FREERUN LED shall light up. Connect three reference
trunks to NSE at J17 Tab 1/2/3,as shown in Fig. 4.2 (d).
CLK0 and LOCK LED starts blinking indicating that NSE has started
locking to CLK0. After 10-12 hours LOCK LED shall become steady
