R2511-HP MSR Router Series Voice Configuration Guide(V5)

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Task Remarks
Configuring outbound SIP proxy server information for a SIP UA Optional.
Configuring transport layer protocol for SIP calls
Required when TCP
or TLS is specified as
the transport layer
protocol.
Configuring SIP
extensions
Strict SIP routing
The feature is
enabled by default,
and requires no
configuration.
Configuring out-of-band SIP DTMF transmission mode Optional.
Configuring source IP address binding for SIP messages Optional.
Configuring a domain name for the SIP UA Optional.
Configuring SIP compatibility Optional.
Configuring user-agent and server header fields Optional.
Configuring SIP extensions for caller identity and privacy Optional.
Configuring call release cause code mapping Optional.
Configuring periodic refresh of SIP sessions Optional.
Enabling early media negotiation Optional.
Configuring VRF-aware SIP Optional.
Configuring SIP UA registration
UAs function to register and to initiate session requests or make responses.
A UA registers with the registrar by sending a REGISTER request containing such information as address,
route, and number. Therefore, when it is called by some other UA through a proxy server, the proxy
server can consult the registrar for its registration information.
The basic functions that a UA must have are the ability to initiate session requests as a caller and the
ability to make responses as a callee. After a user attached to a UA-supported router working as UA dials
a number, the router sends a session request to the called UA as a caller either directly or through one
or more proxy servers.
Configuration prerequisites
The configuration at the server end is completed.
Configuring SIP authentication information
SIP authentication information is required in the following two cases:
• UAs use a proxy server and the proxy server needs to authenticate UAs.
• The peer SIP device needs to authenticate the local device during SIP message exchange.