Chapter22: Configuring ATM Virtual Circuits
Avidia System Configuration and Management User Manual 443
CONFIGURING PVCCS
Configure PVCCs from the PVCC Configuration Table window. From this window, you can
optionally configure backup PVCCs for the primary PVCCs. Backup PVCCs are redundant to
primary PVCCs. A primary PVCC automatically switches to a backup PVCC if the primary
PVCC were to fail. Do one of the following to open the PVCC Configuration Table window:
•In the Site Map Navigation window, click ATM then PVCC Configuration Table.
•In the Tree Navigation window, click Configuration Management, ATM, then PVCC Configuration.
The PVCC Configuration Table window displays.
PVCCs carry data between defined points within the Avidia chassis, such as between a channel
card and a line card. PVCCs also carry data from subscriber modems to Avidia channel cards,
and from Avidia line cards to other destinations in the ATM backbone network.
PVCC configuration requires specifying a VPI and a VCI. VPI and VCI combinations must be
unique only on the same user port, as the circuit is remapped to a different VPI and VCI on the
network interface. This enables different subscribers to use the same VPI and VCI combinations
without creating conflict in the network.