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Server Setting Operations
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To provision SIP for integration with Microsoft Lync or Office Communications
Server
1 Go to Admin > Dial Plan and Sites > Sites.
2 In the Sites page, select the site of interest and click Edit Site
Provisioning Details.
3 In the Edit Site Provisioning Details dialog box, click SIP Settings and
select these options.
Settings not listed below are optional, based on the configuration of your
systems
Fields Description
Enable SIP Specify whether to enable SIP calls.
Automatically
Discover SIP Servers
The CMA system will issue a DNS query to locate the
SIP server and provision that information to
endpoints.
Proxy Server Specify the IP address or DNS name of the SIP proxy
server for the network.
Registrar Server Specify the IP address or DNS name of the SIP
registrar server for the network.
• In an Microsoft Office Communications Server
2007 or Microsoft Lync Server 2010 environment,
specify the IP address or DNS name of the Office
Communications Server or Lync Server server.
• If registering a remote HDX system with an Office
Communications Server Edge Server or Lync
Server Edge Server, use the fully qualified
domain name of the access edge server role.
Backup Registrar
Server
Specify the IP address or DNS name of a backup SIP
registrar server for the network
Transport Protocol Indicates the protocol the system uses for SIP
signaling. The SIP network infrastructure determines
which protocol is required.
• Auto enables an automatic negotiation of
protocols in the following order: TLS, TCP, UDP.
This is the recommended setting for most
environments.
• TCP provides reliable transport via TCP for SIP
signaling.
• UDP provides best-effort transport via UDP for
SIP signaling.
• TLS provides secure communication of the SIP
signaling. TLS is available only when the system
is registered with a SIP server that supports TLS.
When you choose this setting, the system ignores
TCP/UDP port 5060..