Panasonic KX-NCP500, Manual

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Network Parameters
You will need to have the following IP addressing and QoS information to establish VoIP communication on
your network. This information is typically supplied by a network administrator.
Consult your network administrator for specific values.
Parameter Description
IP telephone IP Address
Identifies the location of IP telephones on the network. Each IP
telephone must have a unique IP address.
Subnet Mask Address
Defines which digits of an IP address are used for the network
address and the host address at each network location. The IP
addresses of the IP telephones and the PBX must fall within the same
subnet as that of the default gateway (e.g., router) of the LAN.
Default Gateway Address
Identifies the IP address of the primary gateway (typically a router or
similar device) that exchanges IP packets with the other gateways on
the VoIP network.
PBX IP Address
Identifies the location of the PBX in the network during VoIP
communications.
VLAN ID
Identifies the ID of the logical segment within the corporate LAN,
through which voice packets from IP telephones travel. For details,
refer to "1.2.2 VLAN (Virtual LAN)".
DiffServ (DS) Identifies the value for the DS field in the header of IP packets, which
determines the priority given to packets traveling from IP telephones.
For details, refer to "4.4.3 Setting the Diffserv Parameters".
Types of IP Network
The speech quality depends on the type of IP network in use. Managed IP networks provide better speech
quality compared to unmanaged networks such as the Internet, where quality of service cannot be guaranteed.
Examples of recommended IP networks
•
Digital Leased Line
•
IP-VPN (Virtual Private Network)
•
Frame Relay
Not recommended
•
Internet (including an Internet VPN)
Note
•
Peer-to-peer calls between KX-NT300 series IP-PTs installed at different locations may not be possible
if packet communication cannot be established between the respective networks.
In this case, you need to configure the network settings (e.g., a VPN router when using an IP-VPN) to
establish packet communication.
•
Unlike an IP-VPN, which is set up over a network provider’s own IP network, an Internet VPN is set up
over the Internet. Internet VPNs are not recommended for VoIP communication because transmission
delays and loss of data are likely to occur.
6 IP Networking Guide Document Version 2009-12
1.1.1 Establishing a VoIP Network with the Pure IP-PBX