Enterasys Networks X-Pedition XSR CLI - Manual (Page 215)

RTP Header Compression Commands
XSR CLI Reference Guide 5-139
Mode
Interface configuration: XSR(config-if)#
This command is applicable only on serial interface with PPP encapsulation.
Note: The XSR currently does not block this command on ʺinterface dialerʺ and on ʺinterface
multilinkʺ, but the command has no effect on these interfaces.
This command requires a reboot of the interface to take effect.
Example
The following example set the RTP header compression connections to 100, on PPP serial interface
S1/0:
XSR(config-if)rtp compression connections 100
ip rtp header-compression
This command enables or disables the RTP header compression feature on PPP serial interfaces.
The optional passive keyword tells the XSR to compress outgoing RTP packets only if incoming
RTP packets on the same interface are compressed.
If you use the command without the passive keyword, the software compresses all RTP traffic.
Note: With this release, XSR now supports both the VJ Header Compression (for TCP and UDP
header) and the new IP Header Compression (for TCP, UDP and RTP header compression). XSR
cannot be configured to initiates VJ header compression, but it does response to VJ Header
compression configuration option from the remote peer with a NAK or REJ.
In this release, the behavior is changed slightly. If RTP is not enabled, then upon receiving a VJ
header compression negotiation option, the XSR sends back a NAK or REJ, same as in current
release.
Syntax
ip rtp header-compression {passive}
Parameters
Syntax of the “no” Form
The no command disables the RTP header compression feature:
no ip rtp header-compression
Default
Disabled
passive The software compresses outgoing RTP packets only if incoming RTP packets
on the same interface are compressed. If the command is used without the
passive keyword, the software compresses all RTP traffic.