2N VoiceBlue Enterprise - User Manual - Manual (Page 70)

5-8 2N
®
VoiceBlue Enterprise
From VoIP to GSM
On coming to an 2N VoiceBlue Enterprise VoIP line, a call
proceeds to the Least Cost Router (LCR). The LCR decides which
line the call shall use for going out. The decision depends on the
called number and LCR settings, refer to Section 7.
Least Cost Router
(LCR)
SIP line
H.323 line
GSM line
SIP line
H.323 line
Fig. 26 – Routing of Incoming Calls from VoIP
Although the Least Cost Router is, as its name suggests, designed
primarily for searching the most cost-efficient route to a GSM
network, it is not limited just to this function. Generally, it can
interconnect incoming calls from VoIP lines to any lines that are
available in the gateway regardless of their types. This is very
useful for interconnecting heterogeneous VoIP networks, such as
SIP and H.323 environments.
Incoming Calls from GSM
A special routing mechanism is applied to calls coming to the
2N VoiceBlue Enterprise gateway from GSM networks.
Fig. 27 – Routing of Incoming Calls from GSM
As selected, the GSM router: 1) forwards the call to a fixed
operator; 2) plays ME message and allow to dial local or remote
number according to the ME CLIP; or 3) forwards the call to the
DISA automat where the calling party chooses the route using a
voice menu and tone dialling.