ture, 27 322 SIP trunking models IP addressing, 95 advanced SIP trunking features, 26 selecting, 83-84 call centers, SIP trunking trends, Skinny Packets, 5 28-30 SLA charges, 50-51 enterprise network connection to, SMB SIP trunks for PSTN access, case study, 263-272 212-223 technical requirements SNMP (Simple Network Management certification issues, 185 Protocol), 74 delivery issues, 181-182 SNR (Single Number Reach) solutions, documentation and training issues, 182 softphone trends, 16-17 QA issues, 184-185 software licenses, cost of, 49 session management, 162 solution monitoring, SIP trunking for support issues, 182-183 SP networks, 74-75 SRST (Survivable Remote Site SP networks, SIP trunking Telephony), 93 billing servers, 61-62 supplementary services, 9-11, 27 call agents, 59-60 mobility, 108 CPE, 64-65 transcoding, 107 device monitoring, 74-75 voice calls, 106 edge SBC, 58-59 voice mail, 107 emergency services, 69 support, SBC vendor technical enhanced services, 70 requirements, 182-183 FMC services, 70 system specification, SBC vendor IP network infrastructures, 62-63 technical requirements, 178 Legal Intercept Servers, 69 legally required supplementary services systems, 69 media gateways (voice/video), 66-68 Tcl scripting, CUBE deployment scenario, 229-232 peering SBC, 71-73 TDM PSTN trunking, 82-83 solution monitoring, 74-75 TDM trunks, transitioning to SIP video calling services, 70 trunks voicemail services (network-provided), assessing the current state of trunking, 33-34 SP UNI, 144 branch locations, transitioning, 40-41 speakers, 2 call centers, transitioning, 38-39 specifying length of test plan, 253 headquarters locations, transitioning, SPs (service providers) 39-40 UC (Unified Communications) information gathering from local SPs, call centers, transitioning, 38-39 gathering information from local SPs, live department, transitioning, 37 pilot SIP trunk implementation, headquarters locations, transitioning, conducting, 35-37 39-40 post-project assessment, 41-42 live department, transitioning, 37 p