1 - Cisco
2 - NEC
3 - Microsoft
4 - N4
5 - ribbon
6 - enghouse
7 - BT
8 - BCM
9 - poly
10 - intermedia
11 - broadsoft
12 - sennheiser
13 - 8x8
14 - interoute
15 - cte
16 - telstra
17 - pccw