Service/Feature Required DSP Resource
Trunk (G.729) 2.2
Trunk (G.711) 1
Legacy Trunk (ISDN/Analogue) 1
Extension (G.729) 2.2
Extension (G.711) 1
IP-CS (G.729) 2.2
IP-CS (G.711) 2
Unified Messaging (UM) *1 1.3
2-Way Recording *2 2.3
OGM 2
Conferencing 0.5
*1 This does not include the DSP cost of the IP-PT/Trunk using the UM Service.
*2 Two-Way recording also requires a Conference Trunk
1.3 DSP Resource Usage (1)
The required DSP Resources are calculated using the following values