network audit freeware

Some network audit freeware products already have begun transitioning to DSCP CS3 for Call-Signaling marking. In this interim period, both code points (CS3 and AF31) should be reserved for Call-Signaling marking until the transition is complete

Most Cisco IP Telephony products use the Skinny Call-Control Protocol (SCCP) for Call-Signaling. Skinny is a relatively lightweight protocol and, as such, requires only a minimal amount of bandwidth protection (most of the Cisco large-scale lab testing was done by provisioning only 2 percent for Call-Signaling traffic over WAN and VPN links). However, newer versions of CallManager and SCCP have shown some "bloating" in this signaling protocol, so design recommendations have been adjusted to match (most examples in the design chapters that follow have been adjusted to allocate 5 percent for Call-Signaling traffic). This is a normal part of QoS evolution: As applications and protocols continue to evolve, so do the network audit freeware designs required to accommodate them