sysdat.fm
A31003-H3590-S100-7-7620, 06/2012
HiPath 3000/5000 V9, Service documentation
2-71
Nur für den internen Gebrauch System Data
Dynamic Configuration Rules
6 voice channels over PPP must be calculated for branch office 1. The points for G.729 with a
packet assembly of 3 (60ms) must be used. 8 gateway channels via LAN 1 must be calculated
for branch office 2. The signaling load (14 PBX networking channels) must also be taken into
account.
With a permissible maximum points total of 980, this scenario is feasible.
2.5.4.2.4 IP Trunking with VPN (Voice Only)
2 HiPath 3500/3550 systems should be connected via VPN with a HiPath 3800 system. At head
office (HiPath 3800), only TDM telephones are connected. 8 voice channels via LAN2 are avail-
able for the connection to the branch offices.
Each branch office (HiPath 3500/3550 system) is equipped with 30 HFA telephones and 8
gateway channels for the connection with the ISDN CO. 4 voice channels are also available for
the connection to head office. The codec G.711 with a sample rate of 20ms is used for the VPN
networking. The connection between the head office and the branch offices should be config-
ured via the Internet using an AES-encrypted VPN tunnel.
For this configuration, the HiPath 3800 requires one STMI2 (2 DSPs on board for 32 channels),
while the HiPath 3500/3550 systems each require one HXGS3 (1 DSP on board for 8 chan-
nels).
Table 2-50 Calculation for Head Office
Function Formula Points
Signaling: PBX networking channels (without H.235) 14 · 3.2 45
Gateway channels: payload (G.711/20ms) 8
· 39 312
PPP channels: voice with G.729 and a packet assembly of 3 6
· 54 324
Total 681
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