VoIP
Aspire Software Manual Features ◆687
The following chart shows the maximum number of simultaneous calls based on the different group
settings and the type of VOIPU PCB being used. So, for example, with a 16VOIPU, 7 calls can use
the G.711/G.729 with 20ms VIF, which would then restrict the remaining 9 channels to use one of
the Group 2 settings (which have a higher compression and lower voice quality than the Group 1
settings).
16VOIPU PCB
CODEC VIF Number of Simultaneous Calls
Group
1
G.711/G.729 20ms 012345678910111213141414141415
max
Group
2
G.711 30ms 16 15 14 13 12 11 10 987654300011 0
G.729/G.723 30ms 01201
G.729 40ms
G.729 50ms
G.729 60ms 21010 1
G.729 70ms
G.729 80ms
32VOIPU PCB
CODEC VIF Number of Simultaneous Calls
Group
1
G.711 30ms 00123456789101112
max
Group
2
G.729/G.723 30ms 0 16
max 1413121098654210
G.729 40ms
G.729 50ms
Group
3
G.729/G.723 60ms 32 16 17 17 17 18 18 18 19 19 19 20 20 20
G.729 70ms
G.729 80ms