2N VoiceBlue Enterprise - User Manual - Manual (Page 66)

5-4 2N
®
VoiceBlue Enterprise
It can even replace the PBX completely for SIP telephones
because it is equipped with an integrated SIP proxy. This
simplifies the VoIP network structure as shown in fig. 23.
LAN
SIP telephones
ATEUS ®
VoiceBlue
Enterprise
Voice stream
signalling
Fig. 23 – 2N VoiceBlue Enterprise as SIP Proxy
Although call interconnection between VoIP and GSM networks is
the primary function of 2N VoiceBlue Enterprise, the gateway can
also be used for bridging VoIP networks with different signalling
standards – SIP and H.323. For such arrangement see fig. 24.
LAN
SIP telephones
ATEUS ®
VoiceBlue
Enterprise
voice stream
signalling
H.323
gatekeeper
H.323 phones
Fig. 24 – 2N VoiceBlue Enterprise as SIP - H.323 Gateway
The situation shown in fig. 24 differs from simple SIP-based call
connection in that the gateway transmits both signalling and voice
channels here, like in interconnecting calls from VoIP to GSM.
This results in a certain limitation of the maximum number of calls
due to a limited hardware pass-through capacity of the gateway.