Panasonic KX-TDE100 Network Manual page 6

1.1.1 Establishing a VoIP Network with the Pure IP-PBX
Parameter
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 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 travelling from IP telephones.
For details, refer to "4.3.3 Setting the Diffserv Parameters".
Description
Not recommended
•
Internet (including an Internet VPN)