Panasonic KX-NCP500 Manual page 6

1.1.1 Establishing a VoIP Network with the Pure IP-PBX
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
IP telephone IP Address
Subnet Mask Address
Default Gateway Address
PBX IP Address
VLAN ID
DiffServ (DS)
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
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
Identifies the location of IP telephones on the network. Each IP
telephone must have a unique IP 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.
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.
Identifies the location of the PBX in the network during VoIP
communications.
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)".
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".
Not recommended
•
Description
Internet (including an Internet VPN)
Document Version 2009-12