Issue Possible Cause & Solution Reference
I cannot call entries in the
phonebook.
•You are trying to make a TEL line call, but the unit is not set to
make TEL calls.
→Make sure the "Line Selection" setting is set to "IP +
TEL".
page 23
•You are trying to make an IP line call, but the "Operation
Mode" setting is not correct.
→Change the setting to "Peer to Peer" if you want to make
or receive peer to peer IP calls (i.e., calls made by
specifying the called party's IP address).
→Change the setting to "IP-PBX" if you want to make or
receive intercom and outside calls as a SIP extension of the
connected PBX.
page 25
The unit returns to standby
mode while adding or
editing phonebook entries.
•1 minute has passed since you pressed a button.
→If you pause for over 1 minute while adding or editing
phonebook entries, the unit returns to standby mode.
—
Programming
Issue Possible Cause & Solution Reference
The unit returns to standby
mode while programming
the unit.
•1 minute has passed since you pressed a button.
→If you pause for over 1 minute while programming the unit,
the unit returns to standby mode.
—
I cannot program the unit. •You are on a call.
→Program the unit once you have finished the call. —
•A call is being received.
→The unit exits programming mode automatically when a call
is received. Program the unit again once you have finished
the call.
—
After I changed the settings,
the changes do not take
effect.
•The unit must be restarted before the new setting becomes
effective.
→Restart the unit.
page 43
Display Messages
Message Possible Cause & Solution Reference
Busy •The called party is busy (displayed for IP calls only).
→Try again later. —
Reject Call •The called party rejected your call (displayed for IP calls only).
→Try again later. —
64 Operating Instructions Document Version 2008/10
Troubleshooting