Panasonic KX-NS1000 Installation Manual page 360

8.4.1 One-look Network
Number of Simultaneous Calls
The number of simultaneous calls is proportional to number of extensions registered to the PBX, as shown in
the chart below. The proportion is approximately 0.25 when the number of registered extensions is 100. For
more information about the number of simultaneous calls, ask your local Panasonic dealer.
100
90
80
70
60
50
40
30
20
10
0
10
Number of Registered
Extensions
Number of Simultaneous
Calls
Required Bandwidth per Call for VoIP Communication
The required bandwidth for VoIP communication is determined by the codec used and the packet sending
interval.
Codec
G.711/G.722
G.729A
G.722 is only available for calls between KX-NT300 series IP-PTs, KX-NT500 series IP-PTs, and some SIP phones that support this
*1
codec during peer-to-peer communication. For details, refer to "5.2.3 Peer-to-Peer (P2P) Connection" in the Feature Guide.
Required Bandwidth per Call for Signalling
In a One-look network, a certain amount of bandwidth is required for the master unit to handle all the calls in
the network. The required bandwidth depends on the type of IP telephone.
Phone Type
IP Telephones (except SIP phones)
SIP Phone
Example:
The following examples show different cases of assessing bandwidth for a One-look network.
360 Installation Manual
50 100
Number of Registered Extensions
10
6
20 ms
80 kbps
24 kbps
150 200
50 100 150
16 26 35
Packet Sending Interval
30 ms
74.7 kbps 72 kbps
18.7 kbps 16.0 kbps
Required Bandwidth
43.0 kbps
16.0 kbps
250
200 250
44 53
40 ms 60 ms
69.4 kbps
13.4 kbps
300
300
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