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Configuring Media Flow Protocols For Sip Calls - HP FlexNetwork MSR Series Configuration Manual

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Step
1.
Enter system view.
2.
Enter voice view.
3.
Enter SIP client view.
4.
Set the aging time for TLS
connection.

Configuring media flow protocols for SIP calls

Configuration prerequisites
If a SIP server is used to forward calls, complete the configurations on the SIP server.
Configuration procedure
To specify the media flow protocols for SIP calls:
Step
1.
Enter system view.
2.
Enter voice view.
3.
Enter SIP client view.
4.
Specify the media flow
protocols for SIP calls.
Specifying the URL scheme for outgoing SIP calls
The device provides two URL schemes: SIP and SIP secure (SIPS). You can choose either as
needed. To ensure transmission security, specify the SIPS scheme.
The execution of the url command in SIP client view specifies the global URL scheme. If you want to
configure a different URL scheme for individual outgoing SIP calls, specify the URL scheme in
corresponding VoIP voice entity view. When the URL scheme configured in VoIP voice entity view
and that configured in SIP client view are different, the former is adopted. That is, the VoIP voice
entity configuration takes precedence over global configuration.
Configuration prerequisites
If a SIP server is used to forward calls, complete the configuration at the SIP server end.
As the SIPS scheme must use TLS, configure TLS as the transport layer protocol of SIP before
specifying the SIPS scheme.
Command
system-view
voice-setup
sip
timer connection age tls
tls-age-time
Command
system-view
voice-setup
sip
media-protocol { rtp | srtp } *
151
Remarks
N/A
N/A
N/A
Optional.
By default, the aging time for TLS
connection is 30 minutes.
Remarks
N/A
N/A
N/A
Optional.
By default, RTP is adopted.
After you have specified both the
RTP and SRTP protocols as the
media flow protocols for SIP calls,
if the device is the call initiator,
both media flow protocols are
carried in the INVITE message for
the receiver to select. If the device
is the call receiver, the SRTP
protocol is applied for media flow
negotiation. If the negotiation
fails, the RTP protocol is applied.

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