Installation manual

          
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Partner modules include telephone electronics and a switching power supply
that accepts various world voltages. Special Partner power cords supply input
electrical voltage to the correct power supply wires. Modules cool
themselves convectively; in normal installations, modules are mounted
vertically, and as electronic components heat, the heat transfers to
surrounding air, which rises, flowing out of the top of the module.
Long-term reliability depends on proper heat dissipation. A rule of thumb for
understanding heat is that as temperature rises 10°, electronic component life
drops in half. Keeping Partner equipment cool will prolong its life.
Proper installation, with plenty of clearance, in a ventilated, dust-free
environment is the best approach. Some Partner users feel that the Partner 2-
slot carrier, and using older 5-slot carrier covers can impede airflow, reducing
component life. The newest ACS 5-slot carrier cover allows much more air
flow.
; ( ,  + 
Avaya.com officially recommends Desi.com as a source of designation strips.
There are many other providers. Unlike Merlin phones, Partner phones need
specially punched desi strips.
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To test the lights and ringer in any Partner phone, hold down the # button
with the handset in the cradle for at least 5 seconds, then go off hook while
still holding down the # button. All lights will illuminate with a steady ring.
Hang up to end this test.
; '     : <" "  +   
Several service people report that the flex circuits in MLS phones can work
intermittently, failing only after 24 hours of being plugged in. When testing
MLS phones, leave them powered up for at least 24 hours before declaring
that they work.