Conference Phone User Manual
Table Of Contents
- Important Safety Instructions
- Caution: Read This Before Operating Your Unit.
- Contents
- Features
- About this Manual
- Preparation Procedure
- Configuring the Settings
- Setting the Menu List
- Registering the IP network information
- Setup of telephone function
- Configuring the sound settings
- Configuring the general settings
- Adjusting the ring tone volume
- Controlling the system using the remote operation function
- Configuring the backlight off setting
- Adjusting the LCD contrast
- Selecting the menu language (Language)
- Setting the date and time manually
- Setting the time zone
- Setting the daylight saving time
- Selecting the SNTP server for synchronization
- Selecting the SNTP synchronization interval
- Call history management
- Setting the password
- Calling a ProjectPhone system in the same subnet
- Setting the Date and Time
- Editing the Address Book
- Using the SIP Server
- Hierarchical Connection of Multiple ProjectPhone (Cascade Connection)
- Interlocked Connection of ProjectPhone Systems
- Connection Using Audio Connection Cables
- Updating the Firmware
- Troubleshooting
- Resetting this Unit
- Obtaining the Setting Information for Support on this Unit
- Confirming the System Log Message of This Unit (Syslog)
- Specifications
- Notes on Transferring/Disposing this Unit
![](/manual/yamaha/pjp-50r/conference-phone-user-manual/images/img-46.png)
41
Troubleshooting
ADDITIONAL
INFORMATION
English
Problem Cause Remedy
A call cannot be received. The connection mode settings of this unit and
the other unit are different.
A unit in the mesh connection mode cannot
communicate with a unit in a cascade
connection mode. Set the two units to the
same connection mode (page 14).
The IP/SIP settings of this unit and the other
unit are different.
A unit using the SIP address cannot
communicate with a unit using the IP
address. Enable or disable the SIP server
operation as required so that both units use
the same type of address (page 15).
The SIP server is not running. Consult your system administrator.
This unit is connected to an incompatible
telephone circuit (digital circuit, etc.).
Consult the manager of your telephone
circuit.
The audio from the other unit cannot
be heard.
The microphones are muted on the other
unit.
Cancel mute on the other unit.
The audio is interrupted. The required bandwidth is not reserved. Check that the bandwidth required for
communication is reserved (pages 4 and 46).
A network fault occurred. Wait until the fault is released.
Consult your system administrator.
The LAN cable or modular cable is not
connected properly.
Check that the LAN cable or modular cable
is connected firmly.
The setting of the codec is not proper. Set the codec properly (page 19).
Q4: Other problems
Problem Cause Remedy
The audio output is delayed. The required bandwidth is not reserved. Check that the bandwidth required for
communication is reserved (pages 4 and 46).
This unit generates feedback noises. This unit is located against a wall. Locate this unit at a certain distance from a
wall.
An object is placed near this unit. Avoid placing an object in front of the
microphones.
This unit is used in a room with high
reverberation.
Place objects with high sound absorbance in
the room by avoiding the positions in front of
the microphones.
Avoid talking with a loud voice to reduce
reverberations.
Change the Room Size setup (page 18).
I forgot the password. Enter the master password (page 21)
The clock setting has been cleared. The built-in battery for clock information is
dead.
Consult your nearest authorized Yamaha
dealer or service center.