ZyXEL Communications IES-708-22A - Manual (Page 40)

Chapter 1 Introducing the IES-708-22A
IES-708-22A User’s Guide
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1.1.2 High-speed, Point-to-point Connections (STU-R)
Connect the IES-708-22A to another DSLAM, such as a chassis-based system, to create a
cost-effective, high-speed connection for high-bandwidth applications, such as
videoconferencing and distance learning. In this case, the IES-708-22A is the STU-R device.
In the following example, the IES-708-22A connects a branch to the existing chassis-based
system at headquarters.
Figure 2 End-to-end, High-speed Network Connections (STU-R)
1.1.3 High-speed Internet Access (STU-C)
Connect the IES-708-22A to a SHDSL device such as a router, switch, or modem to provide
high-speed Internet access. In this case, the IES-708-22A is the STU-C device.
Figure 3 High-speed Internet Access (STU-C)
1.2 STU-C/STU-R Mode
The IES-708-22A can run in STU-C mode or in STU-R mode. This mode is determined by the
firmware the IES-708-22A is running.
• The STU-C firmware version contains AYS; for example, V3.52(AYS.0)b2.
• The STU-R firmware version contains AYT; for example, V3.52(AYT.0)b2.
1.2.1 Checking the Current Mode
Look at the model name or the firmware version to find out whether the IES-708-22A is in
STU-C mode or in STU-R mode.
STU-R
STU-C
STU-C