User's Manual

Navini Networks, Inc. Ripwave Base Station I&C Guide
Part #40-00047-00 Rev D v1.0 83
February 28, 2003
The PVC configuration is broken into 3 sections: ATM layer parameters; optional Inverse
Multiplexing over ATM (IMA) parameters, and T1 physical layer parameters. The first item
selects which ATM interface will be used for the Management PVC. If IMA is not selected, you
may select from one of the 8 T1 ports numbered 1-8 using the option t1-N, where N is the port
number. This is the same interface port number specified in the EMS. If IMA is desired,
reference the following section:
pvc type-atm i/f : t1-0 [t1-(1-8)|ima-(1-2)]
The circuit identifier for this segment of the Management PVC is the next item specified. The
first parameter identifies the maximum number of bits for any PVC’s identifier Virtual Path
Identifier/ Virtual Channel Identifier (VPI/VCI) pair. The BTS restricts the available set to 13
total bits. However, you are free to divide those 13 bits between the VPI and VCI as needed,
with the VPI having a maximum allocation of 8 bits. You can choose the number of bits for each
by selecting two values separated by a “:”. Or you may select the BTS default of 3 VPI bits and
10 VCI bits by pressing the Enter key:
pvc id size vpi:vci : 3:10 [1-8:1-13]
Having specified the number of significant VPI and VCI bits, now select the actual identifier.
The BTS will restrict the values entered for the VPI and VCI to the ranges you selected in the
previous size specification. For instance, if 3:10 is selected as a size allocation, the VPI must be
between 0 and 7.
Again, you can select the values for the VPI and VCI separated by a “:” or accept the default
value of VPI = 1 and VCI = 100 by pressing the Enter key. Be careful not to use the reserved
VCI values from 0-15 that are often used in ATM networks for Operation, Administration, and
Maintenance (OAM) purposes.
pvc vpi:vci : 1:100 [0-255:16-8192]
The service category for the Management PVC is specified next. The choices are Unspecified Bit
Rate (UBR) or Constant Bit Rate (CBR). Other ATM service categories are available for traffic
PVC’s, but those are specified in the EMS configuration. UBR and CBR both require a set data
rate and delay variation parameter. The data rate is specified in cells per second in the ATM
Traffic Contract’s Peak Cell Rate (PCR) field. The delay variation is in the ATM Cell Delay
Variation Tolerance (CDVT) in the ATC’s CDVT field. Specify the PCR and the CDVT values
separated by a “:” or chose the default by pressing the Enter key.
pvc service category : ubr [cbr|ubr]
pvc atc pcr:cdvt : 3641:100 [1-3641:0-100]