Zhone Technologies 600 - Manual (Page 91)

Server Cards 4-17
ATM Card ACS-ATM Card User Screens and Settings
4.3.6 Variable Bit Rate (VBR) Configuration Screen
The ACS-ATM card supports four super-rate channels up to 2.048 Mbps each. The aggregate
bandwidth cannot exceed 4.096 Mbps.
Additionally, the card is capable of supporting up to 64 HDLC channels operating at Nx64
kbps (N = 1 to 32). The other 64 channels are accessed by using the “greater than” (>) and
“less than” (<) symbols. The total HDLC bandwidth available for variable-bit-rate (AAL 3/4
& 5) traffic on a single ATM Server is 8 Mbps.
Alternatively, only C1can be used as an Ethernet controller. The ACS-ATM card is equipped
with a single 10base-T Ethernet connector. In addition to the 8 Mbps of VBR traffic from the
HDLC controllers, the Ethernet port provides encapsulation for Ethernet MAC layer frames.
With this release of the product, no filtering or forwarding is supported by the card. All frames
on the Ethernet are transmitted to the ATM aggregate port.
Figure 4-6 shows a typical Variable Bit-Rate (VBR) Configuration Screen. To go to that
screen, press “v” (Vbr command) in the ACS-ATM Card Main Screen. Table 4-8 lists the
actions you can perform from this screen, and Table 4-8 shows the option settings and defaults.
Figure 4-6. Typical VBR Configuration Screen