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42004-484F
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p:\standard ioms - current release\42004 instr. manuals\42004-484f.docx
09/15
General Installation Guidelines
As previously noted, the preferred system configuration is a dedicated telephone line per Clean Phone
®
Telephone. This is an actual
requirement
when using TMA in its typical “polling” operation.
Although it is not recommended, a Clean Phone
®
Telephone can share a telephone line with another
Clean Phone
®
Telephone with the understanding that if two or more telephones are put into use
simultaneously the line current could drop sufficiently to disconnect the telephone call completely.
Additional “line sharing” or “party line” configuration issues could include sporadic telephone operation,
difficulties with programming, or premature disconnection of calls. Special system features (voice mail,
call waiting, etc.) could also create problems if not disabled. Successful shared line operation will depend
on the line current, the length of the cable run, and the condition of the telephone cable.
N
OTE
:
A Clean Phone
®
Telephone should never be installed on the same telephone line as any
other (non-Clean Phone
®
) telephone type.
When sharing a telephone line using TMA, the telephone must be scheduled to “call-in” instead of being
polled by TMA.
Station Placement
To prevent feedback problems in the system, volume settings and station placement must be taken into
consideration. Unpleasant feedback problems can be reduced by:
Pointing the telephone away from other telephones located nearby
Reducing volume levels
Feedback problems can be avoided by installing each analog Clean Phone
®
in a separate room and wall.
