Important Notice For Subscription And Installation; Port Requirements; Firewall Requirements - Panasonic KX-NCP500 Programming Manual

1.2 Important Notice for Subscription and Installation

1.2.1 Port Requirements

Required Ports for Each Channel
When configuring a router with NAT enabled, you need to secure a certain number of ports for each SIP and
RTP/RTCP channel. For RTP/RTCP, the number of required ports is double the number of activated SIP CO
lines (Ch). For SIP signaling, the number of required ports is always one regardless of the number of activated
SIP CO lines (Ch).
<Example>
If 4 SIP CO line channels are activated, you need the following number of ports:
Protocol Type
RTP
RTCP
SIP
Total

1.2.2 Firewall Requirements

If the VoIP network contains a firewall, you must configure the firewall to allow VoIP packets to pass through
certain ports of the ports listed below without being blocked by filtering. The ports for which you need to
configure the firewall may vary depending on the network conditions.
For more information, consult your network administrator.
[IP Packets to V-SIPGW16 Card]
Port
SIP Client Port
STUN Client Port
NAT Voice (RTP) UDP Port
DNS (Client) Port
[IP Packets from V-SIPGW16 Card]
Port
SIP Server Port
Registrar Server Port
STUN Server Port
Manual DNS Server Port
Document Version 2011-10
Required Port
4
4
1
9
TCP/UDP
UDP
UDP
UDP
UDP
TCP/UDP
UDP
UDP
UDP
UDP
1.2.2 Firewall Requirements
Default Port No.
35060
33478
16000 to N
30053
Default Port No.
5060
5060
3478
53
Programming Manual for Virtual SIP CO Line Card 9