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