2N OfficeRoute - User manual, 1493 v1.9.0 - Manual (Page 54)

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2N TELEKOMUNIKACE a.s., www.2n.cz
®
Figure 3.33: 2N OfficeRoute
®
as SIP Proxy
Although call interconnection between VoIP and GSM networks is the primary function
of , the gateway can also be used for 2N OfficeRoute/2N VoiceBlue Enterprise
® ®
bridging VoIP networks with different signalling standards – SIP and H.323. For such
arrangement see Fig. 3.34.
Figure 3.34: 2N OfficeRoute
®
as SIP Proxy - H.323 Gateway
The situation shown in fig. 43 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.
Routing
Routing means a process of retrieving a route from the calling party to the called one.
There are various routing methods according to the type of call and place from which
the call is coming.