Polycom HDX 4000 Series Administrator's Manual page 50

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Setting Description
Transport Indicates the protocol the system uses for SIP signaling.
Protocol
The SIP network infrastructure in which your Polycom HDX
system is operating 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.
Proxy Server Specifies the DNS name or IP address of the SIP Proxy
Server. If you leave this field blank, the Registrar Server is
used. If you leave both the SIP Registrar Server and Proxy
Server fields blank, no Proxy Server is used.
By default for TCP, the SIP signaling is sent to port 5060 on
the proxy server. By default for TLS, the SIP signaling is sent
to port 5061 on the proxy server.
The syntax used for this field is the same as for the Registrar
Server field.
Note: If you have installed the RTV option key, this setting is
hidden. In Microsoft networks, the Proxy server and the
Registrar server are always the same server, so only one
server address field is required.
User Name Specifies the SIP address or SIP name of the system, for
example, mary.smith@department.company.com. If you
leave this field blank, the system's IP address is used for
authentication.
Notes:
• If you have installed the RTV option key, this setting is
named Sign-in Address.
• This setting is required for registration with Microsoft
Office Communications Server 2007 R2 or Microsoft
Lync Server 2010.
Domain User Specifies the name to use for authentication when registering
Name with a SIP Registrar Server, for example,
msmith@company.com. If the SIP proxy requires
authentication, this field and the password cannot be blank.
Notes:
• If you have installed the RTV option key, this setting is
named User Name.
• This setting is required for registration with Microsoft
Office Communications Server 2007 R2 or Microsoft
Lync Server 2010.
Networks
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