LTRT-31902 AudioCodes Mediant 1000 MSBG with Microsoft Lync and Verizon SIP Trunk Configuration Note

1.7

Lync Server 2010 and Verizon SIP Trunk

Topology

The procedures described in this document describe the following example scenario:



An enterprise has a deployed Lync server 2010 in its private network for enhanced communication within the company.



The enterprise decides to offer its employees Enterprise voice and to connect the company to the PSTN network using the Verizon SIP Trunking service.



AudioCodes Session Border Controller (SBC) is used to manage the connection between the Enterprise LAN and the Verizon SIP trunk.

The “session" refers to the real-time voice session using IP SIP signaling protocol.

The "border" refers to the IP to IP network border between the Microsoft Lync network in the Enterprise LAN and the Verizon SIP trunk in the public network.

Figure 1-1 below illustrates the interoperability topology between the Lync Server 2010

LAN and the Verizon SIP Trunking site.

The setup requirements are characterized as follows:



While the Lync Server 2010 environment is located on the Enterprise's Local Area

Network (LAN), the Verizon SIP Trunks are located on the WAN.



The internal data routing capabilities of the Mediant 1000 MSBG device are used.

Consequently, a separate WAN interface is configured in the LAN.



Lync Server 2010 works with the TLS transport type, while the Verizon SIP trunk works on the SIP over UDP transport type.



Transcoding support: Lync Server 2010 supports G.711A-law and G.711U-law coders, while the Verizon SIP Trunk also supports the G.729 coder type.



ATA - FAX Support via Analog Media Gateway.



Support for early media handling

Figure 1-1: Topology

Configuration Note 14 Document #: LTRT-31902