Traffic engineering
usual. Direct media shuffling between SIP stations and IP trunks is not supported. Therefore, SIP calling between Communication Manager systems connected by IP TIE trunks always require allocation of VoIP media resources.
C-LAN allocation and SIP trunks
The Communication Manager server communicates to the SES server over administered SIP trunks, which are finite software entities similar to H.323 IP TIE trunks. Communication Manager organizes SIP trunks into trunk groups just like other trunks of any type. Each SIP trunk group signals through a
Each leg of a SIP call in progress takes up one SIP trunk member for the duration of the call. Thus, a
Systems that use
Combining both traffic considerations of trunk member allocation and signaling throughput,
1.Allocate an initial guessed number of
Quick rule: 1000 to 4000 users per
2.Assign SIP endpoints to
Can uniformly distribute or allocate according to user community, if such information exists.