Making And Receiving Calls - Polycom CX700 User Manual

User Guide Polycom CX700 IP Phone

Making and Receiving Calls

Symptom
There is no dial tone.
4 - 6
Problem
Power is not correctly applied to
the Polycom CX700 IP phone.
Dial tone is not present on one of
audio paths.
Corrective Action
Do one of the following steps:
• Check that the display is illuminated.
• Make sure the LAN cable is inserted
properly at the rear of the phone (try
unplugging and re-inserting the
cable).
• If using in-line powering, have your
system administrator check that the
switch is supplying power to the
phone.
Do one of the following steps:
• Switch between handset, headset (if
present) or speakerphone to see if dial
tone is present on other paths.
• If dial tone exists on another path,
connect a different handset or
headset to isolate the problem.
• Verify that the phone is logged in and
registered with Microsoft Office
Communication Server 2007.