Specifications

27 Reference Architecture | Dell
TM
Unified Communication Solution with Microsoft® Lync® Server 2013 for Single Site
Implementation | Version 1.0
Figure 9 Call Routing Tables Example
As shown in Figure 9, the default route for the Lync signaling group specifies two entries. The first entry is a
T1/E1 interface and the second entry is a SIP trunk. In this particular example, the SBC is being used as both
a gateway and a session border controller.
• Phone Number Transformations: In order to route calls between virtual trunks/signaling groups,
number transformations may become necessary. Internal extensions may take only seven digits
but external calls may require a prefix, such as an area code. Such transformations are handled in
these tables using regular expressions. These transformations are applied prior to a call being sent
to the outbound route.
In order to successfully implement the SBC 1000 within the SMB, these are the some signaling groups that
may be required:
• Signaling group for Lync: routed outbound to the SIP trunk and the T1/E1, depending on whether
the SIP trunk or T1/E1 functionality is being leveraged
• Signaling group for SIP trunk: routed outbound to the Lync signaling group
AND/OR
• Signaling group for T1/E1: routed outbound to the Lync signaling group