2N VoiceBlue Next v3.0 - Manual (Page 32)

2N® VoiceBlue Next Connection to VoIP
2.5
32
2.5 2N
®
VoiceBlue Next Connection to VoIP
Since 2N ® VoiceBlue Next communicates using the SIP only, this subsection outlines
solutions for its interconnection with networks working with the H.323 signalling
protocols. 2N
® VoiceBlue Next can be used either in the Point-to-Point or Point-to-
Multipoint mode with the SIP Proxy server.
SIP / H.323 Interconnection
SIP-based devices cannot communicate with H.323.supporting devices directly, but
through a SIP/H.323 gateway. This gateway transfers signalling messages from/to the
protocols. Using the RTP for multimedia data transmission, the SIP and H.323
protocols can go on communicating directly when the SIP/H.323 gateway connection
is established. Thus, the SIP/H.323 gateway helps integrate 2N
® VoiceBlue Next into
the existing H.323 environment.
Point-to-Point Configuration
2N ® VoiceBlue Next can communicate with just one SIP VoIP phone or device (a VoIP
gateway, e.g.) in the PTP (Point-to-Point) mode. The IP address of the opposite party
is always selected as the Proxy server IP address in 2N
® VoiceBlue Next for this mode.
The 2N ® VoiceBlue Next PTP configuration is often used for testing purposes before
implementation into the VoIP network. Refer to the figure below for the PTP scheme.
SIP Proxy
H.323
call manager
H.323 / SIP
gateway
H.323 Phones SIP Phones
H.323 SIP
H.323
SIP