Kofax Communication Server 9.1.1 - Manual (Page 72)

Environment Guide Version 3.00.04
72 © Copyright Kofax, Inc. All information is subject to change without notice.
7.2 How to Estimate Bandwidth Requirements and Configuration Limits
7.2.1 Bandwidth Requirements
Application Server and KCS Line Server are linked via a TCP/IP connection – either local 10/100Base/T or
WAN connection in case of a BranchBox.
Line Server
Bandwidth 30kBit/s per fax channel
70kBit/s per voice or mixed fax/voice channel
Round Trip Time 1000msec (256Byte block size)
BranchBox
Bandwidth 30kBit/s per fax channel
Round Trip Time 1000msec max.
Tandem Application Server (distributed system)
Entry Level Systems (up to 6 FAX lines, max. 5 client/server channels, max. 1Link):
Bandwidth > 1Mbit/sec
Packet Round Trip Time < 50msec
High End Systems (60 Fax-lines and above):
Bandwidth > 5Mbit/sec
Packet Round Trip Time < 10ms
The values given above are minimum requirements for proper operation of the Fax channels. At high
system loads interactive clients such as TCfW might suffer from increased response times.
7.2.2 Configuration Limits
Application Server
LineServer/BranchBoxes: max. 176
Fax/Voice channels: max. 360
Number of user entries: 260.000
Line Server
Fax/voice channels: max. 32
BranchBox
Fax channels: 4per LAN(10Base/T) connection (20 per Model 205
available, for more than 4 channels a separate KCS server
is recommended)
Maximum cable length:
BRI: Point to Multipoint 150m (500ft),
Point to Point 1000m (3300ft)
PRI: E1: 250m(820ft), T1: 35m(110ft)
E&M 2wire: 300m(1000ft)
E&M 4wire: 900m(3000ft)