Case Communications Mayze 24, Reference Manual, Page: 163 / 166

D.2.5 Connecting a Telephone to the Modem
1. Carry out steps 1-3 of Section D.2.1.
2. Carefully slide the modem part-way out of the chassis (it is not
necessary to remove it completely).
3. Compress the tag on the blanking plug in the phone socket and
withdraw it through the back panel, then put it somewhere safe for
future use.
4. Plug your telephone cable into the modem, ensuring it clicks into place.
5. Slide the modem carefully back into the chassis and replace the securing
screws and lockwashers.
6. Replace the mains plug in the socket, then the modem line cord.
7. Re-fit the connections to your DTE, and power the modem on to complete
the process.
Should you decide at a later date to remove the telephone from the socket,
dismantle the modem by the procedure described in 1 and 2 above. Ensure
that you replace the blanking plug once you have removed the telephone
cable, then reassemble and re-connect the modem as described in 5 to 7
above.
D.2.6 Connecting the 24 to 48 VDC Version
The 24 to 48 volt DC powered version of the standalone modem is designed
to operate on an exchange/PABX battery. The supply requirements are 24-
48 VDC, 0.5A max. DC source must be SELV.
The modem power connection is via a 2 metre cable, stripped and tinned
ready for connection to a terminal block.
Connect the red wire to the ground terminal and the black wire to the
–24 to –48 volts DC supply. Double check the connections before turning
the modem on. If the connections are reversed, or the supply voltage is too
high, the fuse will blow. Use a 500mA(T) 250V fuse.
X460-306851 Issue 1 D-5 Rev.1