CHAPTER 5 WAN Configuration
ATM Settings
The following items are displayed on this page:
CURRENT ATM VC
TABLE
The Current ATM VC Table lists the current ATM settings configured on your ADSL Router. By selecting the connection using the radio button associated with it you may edit the connection parameters which are listed below.
◆Select — Clicking the radio button associated with the connection makes the parameters editable.
◆VPI (Virtual Path Identifier) — Adds a VPI entry to the table. (Range:
◆VCI (Virtual Channel Identifier) — Adds a VCI entry to the table. (Range:
◆QoS — Selects packet level Quality of Service (QoS) for the connection. Options are:
■UBR (Unspecified Bitrate): Configures a PVC with a Peak Cell Rate indicating the maximum number of ATM cells that can be sent in a burst.
■CBR (Constant Bitrate): Configures a PVC at a constant bit rate. This option may be required for connections that depend on precise clocking to ensure undistorted delivery.
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◆PCR (Peak Cell Rate) — Configures the maximum allowable rate at which cells can be transported along a connection in the ATM network. The PCR is the determining factor in how often cells are sent in relation to time in an effort to minimize jitter.
◆CDVT (Cell Delay Variation Tolerance) — Configures the maximum amount of jitter permissable.
◆SCR (Sustainable Cell Rate) — Configures the average allowable, long- term cell transfer rate on a specific connection.
◆MBS (Maximum Burst Size) — Configures the maximum allowable burst size of cells that can be transmitted contiguously on a particular connection.
◆Apply Changes — Applies the changes made to the connection.
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