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User Guide for the Polycom CX700 IP Phone
4 - 4
Access to Screens and Systems
Symptom Problem Corrective Action
There is no response from key
presses.
The Polycom CX700 IP phone is
not in active state.
Do one of the following steps:
• Press the keys more slowly.
• Check with the system administrator
to see whether or not the key has
been mapped to a different function or
disabled.
• Make a call to the phone to check for
inbound call display and ringing as
normal. If successful, try to press
feature keys within the call to access
the Menu, for example.
• Reboot the phone to attempt
re-registration to the call server (refer
to Updating Configuration on page
4-17).
The display shows “Cannot
contact the server...” or “Cannot
acquire IP address”.
The LAN cable is not properly
connected.
Do one of the following steps:
• Check termination at the switch or hub
(furthest end of the cable from the
phone).
• Check that the switch or hub is
operational (flashing link/status lights)
or contact your system administrator.
• Reboot the phone to attempt
re-registration to the call server (refer
to Updating Configuration on page
4-17).
I cannot sign-in to the Polycom
CX700 IP phone. I see the
“Cannot connect to server or
server name is incorrect" error.
The Polycom CX700 IP phone is
not recognized by the server.
Do one of the following steps:
• Validate your domain name is correct.
• Ensure DHCP is configured to provide
DNS address as part of DHCP
response.
• Ensure DNS has SRV records for SIP
service.
• Ensure SIP server is reachable from
the Polycom CX700 LAN.
I cannot sign-in to the Polycom
CX700 IP phone. I see the
"Cannot validate server
certificate" error.
The Polycom CX700 IP phone is
not recognized by the server’s
certificate.
Do one of the following steps:
• Ensure either time.windows.com is
accessible or NTP is configured with
appropriate SRV records created in
DNS.
• Ensure PKI enrollment objects have
been created on AD to point to CA or
CA delegate.