On the phone switches I worked on, the contacts were under some fair pressu=
re. Typically edge connectors to PCB fingers.
Most of the phone rooms were not really atmosphere controlled, but were at =
least fed from the building HVAC.

--
David VanHorn
Lead Hardware Engineer

Backcountry Access, Inc.
2820 Wilderness Pl, Unit H
Boulder, CO =A080301 USA
phone:=A0303-417-1345 =A0x110
email:=A0david.vanhorn@backcountryaccess.com=A0
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