Technical information

ADC Telecommunications, Inc.
604 C
HAPTER 20: MANAGING CABLE MODEMS
What You See
This figure shows an example of the PHS window.
Parameter Descriptions
This table provides a description of the PHS window.
Table 20-17 PHS Window Parameters
Parameter Description
SFID Index for a Service Flow that the CMTS assigns.
CID Index for the service class.
Mask (PHSM) Defines the bit mask and when combined with the
Field parameter, defines which bytes in the header
must be suppressed/restored by the sending or
receiving device.
A bit value of one indicates the byte should be
suppressed by the sending device and restored by the
receiving device. A bit value of zero indicates the byte
should not be suppressed by the sending device or
restored by the receiving device.