1、CallManager Codecs/Regions Redundancy (CM Groups/Device Pool) Dial Plan: Gatekeeper, Sip Proxy, Route Patterns, Route Groups, Route Lists, Digit Manipulation and Digit Analysis Music On Hold Conferencing (Audio and Video) Transcoding Media Termination Points CM Features: Extension Mobility, IPMA, Attendant Console, Call Park, Pickup www.it examprep.com Phone Settings CTI, TAPI and JTAPI Interface
2、QoS
Link Efficiency: LFI, MLPPP, FRF.12, cRTP, VAD Classification and Marking Congestion Management: Queuing CAC: RSVP, GK Traffic Policing and Shaping LAN QoS CM CAC and GK. Hub and Spoke/Fully Meshed MPLS
3、Telephony Protocols
SCCP RTP & cRTP MGCP SIP H323 Analog and TDM Signaling
DHCP Snooping MCS OS Hardening Phone Authentication and Encryption TCP/UDP Port List www.itexam prep.com Firewalls and application Layer Gateways (ALG) NAT