Panasonic Kx Tda0490 Getting Started Manual

Getting Started 41
Section 4
Programming the PBX
This section details the procedure to program the PBX to use 
the VoIP Gateway Card. 

4.1 Programming the PBX in the Los Angeles Office
42 Getting Started
4.1 Programming the PBX in the Los Angeles 
Office
For successful operation of a VoIP network using the VoIP Gateway Card as a QSIG network 
interface, the PBX at each location in the network must be programmed appropriately. For a detailed 
discussion of related features, refer to the Hybrid IP-PBX Feature Guide.
This section details the procedure to program the PBX in the Los Angeles office. After the PBX in the 
Los Angeles office...

4.1 Programming the PBX in the Los Angeles Office
Getting Started 43
Note
For details about network parameter settings, refer to the relevant sections of the Hybrid IP-PBX 
Feature Guide.5.
a.Double-click CO & Incoming Call.
b.Double-click CO Line Setting.
c.Type the CO Name and assign an unused 
Trunk Group Number to be used for all VoIP 
gateway trunks (CO lines).
d.Click OK.
6.
a.Double-click System.
b.Double-click Numbering Plan.
c.Double-click Feature.
d.In the Tie Line Access box, type the dialing...

4.1 Programming the PBX in the Los Angeles Office
44 Getting Started 

Getting Started 45
Appendix A
Guidance for VoIP Installation 

A1 VoIP Requirements
46 Getting Started
A1 VoIP Requirements
A1.1 Bandwidth Assessment
When using the VoIP Gateway Card, you must ensure that the IP network in use has enough 
bandwidth to support VoIP communications. If the amount of bandwidth required for VoIP 
communications is larger than what the network can accommodate, speech quality will be 
compromised. In addition, there may be some adverse effect on the performance of other applications 
(e.g., email or web applications) that use the same...

A1 VoIP Requirements
Getting Started 47
Via WAN (PPP: Point-to-Point Protocol)
Example
Consider the following case as an example:
 Communication: via LAN
 No. of Fax Machines: 2
 G.711 Packet Sending Interval: 20 ms (requiring 87.2 kbps per channel)
 G.729A Packet Sending Interval for Voice Communication: 20 ms (requiring 31.2 kbps per 
channel)
In this case, the required bandwidth will be as follows:
Therefore, inform your network administrator and make sure that the network can support a 
bandwidth...

A1 VoIP Requirements
48 Getting Started
To limit the number of VoIP channels:
 Set the status of the ports you wish to disable (starting from the highest-numbered port) to OUS.
For example, if you wish to use only 10 of the available 16 VoIP channels (i.e., disable 6 
channels), set the ports 8, 7, and 6 to OUS as shown below:
In this case, the equation for bandwidth calculation, based on the previous example, will be changed 
as follows:
A1.2 Network Configuration
You must evaluate the structure of the...

A1 VoIP Requirements
Getting Started 49
Is it possible to have static IP addressing?
Because the maintenance of the VoIP Gateway Card is carried out from a personal computer (PC) 
through an IP network, the card must be assigned a static IP address.
Static IP addressing must be made possible even when the DHCP feature is used. For more details, 
refer to 2.2.1 Network Parameters in the VoIP Gateway Card Programming Guide.
Is network address translation (NAT/NAPT) disabled?
In a network where address...

A1 VoIP Requirements
50 Getting Started
Does only a single router provide access to the IP network?
In a dual network, 2 routers provide access to the IP network as shown in the diagram below. 
However, the VoIP Gateway Card cannot take the advantage of having 2 routers as access points to 
the IP network.
For example, if router A, whose IP address is assigned as the default gateway IP address of the card, 
fails, VoIP communications are no longer possible; the card is not able to switch its default...