4 Introduction
VLink and VLink LE Control Panel User Manual
Bosch Security Systems, Inc.
User Manual
F01U217815 Rev 01
Network Requirement
Recommended configuration
- 100BaseT connection over private LAN
Minimum configuration
-
56kbps dial-up connection over public Internet
Firewall Requirements
Allow
TCP
(Transmission Control Protocol) connection for data on port 1000 and UDP connection for audio on port 1000.
TABLE 1.
Bandwidth Utilization per client
Audio Sample
Rates
Data Rate
(Kbps)
[ATS=20ms
a
]
a.
ATS
(Audio Time Slice) per packet controls how many 20ms audio frames are transmitted within a single
UDP
(User Datagram
Protocol) packet. As each UDP packet requires a fixed amount of overhead, the more frames sent at the same time, the less the UDP
overhead which conserves network bandwidth. Conversely, the more audio frames sent per transmission, the greater the system
latency and the potential consequence of a lost audio packet.
The default is 20ms.
Data Rate
(Kbps)
[ATS=40ms
a
]
Data Rate
(Kbps)
[ATS=60ms
a
]
Data Rate
(Kbps)
[ATS=80ms
a
]
Data Rate
(Kbps)
[ATS=100ms
a
]
8KHz
32
23.6
20.8
19.4
18.56
16KHz
44.8
36.4
33.6
32.2
31.36
32KHz
46.8
38.4
35.6
34.2
33.36