10
innkeeper 1rx™
Digital Hybrid
Configuration
Custom Dry Line Installation
Innkeeper 1rx was designed to work on standard (wet) telephone lines as well as
on custom PBX (dry) lines. Dry line installation is always a custom configuration
and requires substantial telephone system knowledge. These installations are
found in radio and television studios for both PBX and intercom applications.
Wet lines are typical tip / ring telephone lines that carry ring voltage, talk battery,
and full duplex, balanced audio over two wires to an analog telephone. Dry lines
carry the balanced, full duplex audio but without the ring voltage or talk battery.
Innkeeper does allow dry line operation with a few limitations:
• If talk battery is not present when the
<Call>
button is pressed, a dry line is
assumed.
• If talk battery suddenly appears during a dry line call, it becomes a wet line
call, and auto-disconnect will occur when a disconnect signal occurs, or if
talk battery disappears.
• Auto-answer does not work on a dry line.
• The aux telephone jack will not support an analog telephone during a dry
line call.