Panasonic KX-NCP500, Networking Manual

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Protocol Description TCP/UDP Default Port No.
DHCP (MPR) Dynamic Host Configuration Protocol.
Used for receiving an IP address from a
DHCP server. UDP 67, 68
DHCP (IP telephone) UDP 67, 68
FTP (Port mode) File Transfer Protocol.
Used for receiving a data file from a FTP
server to upgrade the firmware version. TCP 20, 21
SNTP (MPR) Simple Network Time Protocol.
Used for clock synchronization. UDP 123
SNMP (MPR) Simple Network Management Protocol.
Used for monitoring network-attached
devices. UDP 161
[IP Packets from V-IPGW16 Card]
Protocol TCP/UDP Default Port No.
RTP/RTCP UDP 12000 to 12255
H.245 TCP 10000 to 10447
H.225.0 Call Signaling TCP 1720
H.225.0 RAS UDP 1719
QSIG Connectionless Tunneling TCP 1718
QSIG Connectionless Tunneling UDP 1717
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 telephones.
Note
Note that the port of the switching hub that connects to the MPR/IP-EXT16 cards 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 2010-08 IP Networking Guide 21
2.1.3 Network Devices