Panasonic KX-NCP0158 Quick Installation Manual page 83

Protocol
FTP (Port mode)
Are layer 2 or higher switches used?
Use of repeater hubs can increase the network load, and therefore may result in degradation in speech quality.
To ensure high speech quality, use only layer 2 or higher switches. Use of layer 2 or higher switches is also
strongly recommended for connecting IP-CSs.
Note
Note that the port of the switching hub that connects to the IPCMPR/IPCEMPR card should be set to
operate under "Auto Negotiation" mode.
Are Category 5 (CAT 5) or higher cables used?
When connecting network devices, make sure to use CAT 5 or higher cables. If other types of cables are used,
communications may not be carried out normally.
Document Version 2009-12
Description
File Transfer Protocol.
Used for receiving a data file from a FTP
server to upgrade the firmware version.
D Guidance for VoIP Installation
TCP/UDP Default Port No.
TCP 21
Quick Installation Guide 83