A1 Voip Requirements; A1.1 Bandwidth Assessment - Panasonic KX-TDA0484 Getting Started

A1 VoIP Requirements

A1 VoIP Requirements
A1.1 Bandwidth Assessment
To establish a VoIP network, you must ensure that the network has enough bandwidth to
support VoIP communications. Inform your network administrator of the required bandwidth,
and make sure that the network can support VoIP communications even under conditions of
maximum network traffic.
Bandwidth Calculation
Provided below is the formula to find out the amount of bandwidth required for VoIP
communications:
Required Bandwidth
= (No. of Fax Machines × Required Bandwidth for Fax Communication) +
[(4 - No. of Fax Machines) × Required Bandwidth for Voice Communication]
Required bandwidth for fax and voice communications for one VoIP channel is shown in the
tables below (for more details, refer to "2.2.3 Voice Communication Parameters" in the VoIP
Gateway Card Programming Guide).
Required Bandwidth for Voice Communication
Via LAN
CODEC
G.711
G.729A
G.723.1 5.3 kbps —
G.723.1 6.3 kbps —
Via WAN (PPP: Point-to-Point Protocol)
CODEC
G.711
G.729A
G.723.1 5.3 kbps —
G.723.1 6.3 kbps —
52 Getting Started
Packet Sending Interval
20 ms 30 ms
87.2 kbps 79.5 kbps
31.2 kbps 23.5 kbps
20.8 kbps
21.9 kbps
Packet Sending Interval
20 ms 30 ms
84 kbps 77.3 kbps
28 kbps 21 kbps
18.7 kbps
19.7 kbps
40 ms 60 ms
75.6 kbps —
19.6 kbps —
— 13.1 kbps
— 14.1 kbps
40 ms 60 ms
74 kbps —
18 kbps —
— 12 kbps
— 13.1 kbps
90 ms
—
—
10.5 kbps
11.6 kbps
90 ms
—
—
9.8 kbps
10.8 kbps