Polycom DOC2238A Hardware Installation Manual page 116

Chapter 4 - Hardware Description
4-36
IP/SIP
In the IP/SIP section of the Resources Report both non-encrypted and
encrypted participants are grouped together.
For example, if one encrypted and one non-encrypted participants using a line
rate of 128 Kbps attend a conference, the resource report displays the sum of
the used resources of both participants together. In this case the non-
encrypted participant is allocated 1 port and the encrypted participant 2 ports,
totalling 3 ports.