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58 lines
2.0 KiB
Plaintext
58 lines
2.0 KiB
Plaintext
== Configuring OsmoMGW
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A basic configation of OsmoMGW mainly consists of specifying the IP address
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and port on which to listen to MGCP commands, but changing the port range at
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which the RTP streams terminate as well as limiting operation to a single call
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agent can be done as well as changing the number of endpoints.
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=== Configuring MGCP
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By default OsmoMGW listens for MGCP on port 2427 on any IP address. If a call
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agent address is configured then OsmoMGW will only answer MGCP commands from
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that IP port 2727, otherwise all sources are handled. A domain can be
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specified
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.Example: MGCP configuration
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----
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OsmoMGW(config-mgcp)# bind ip 127.0.0.1
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OsmoMGW(config-mgcp)# bind port 2427
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OsmoMGW(config-mgcp)# call-agent ip 127.0.0.1
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OsmoMGW(config-mgcp)# domain mgw-bsc
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OsmoMGW(config-mgcp)# local ip 127.0.0.1
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----
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=== Configuring the trunk
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The first trunk (trunk 0) is considered a virtual trunk in OsmoMGW. All
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endpoints of type "rtpbridge" are routed here. The virtual trunk is configured
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in the config-mgcp context.
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All other trunks are configured in the config-mgcp-trunk context, but the
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commands used are identical. Right now trunks are considered only for ds/e1
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type endpoints which are not yet implemented. Don't use trunks other than the
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"virtual" trunk 0.
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.Example: MGCP trunk configuration
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----
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OsmoMGW(config-mgcp)# number endpoints 63 <1>
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OsmoMGW(config-mgcp)# rtp bind-ip 10.0.0.1 <2>
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OsmoMGW(config-mgcp)# rtp port-range 12000-14000 <3>
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----
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<1> Maximum number of endpoints that can be allocated at once
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<2> Use this IP when binding RTP endpoints
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<3> Use ports in this range when binding RTP endpoints
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There are some options to tweak how RTP forwarding behaves in OsmoMGW:
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.Example: MGCP trunk rtp options
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----
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OsmoMGW(config-mgcp)# rtp keep-alive 30 <1>
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OsmoMGW(config-mgcp)# rtp-patch ssrc <2>
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OsmoMGW(config-mgcp)# rtp-patch timestamp <3>
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----
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<1> Send dummy UDP packets periodically to RTP destination
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<2> Hide SSRC changes
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<3> Ensure RTP timestamp is aligned with frame duration
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