SIP User's Manual 470 Document #: LTRT-12801
MP-500 MSBG
2. Define the number of SBC legs that require transcoding in the 'Number of Media
Channels' field of the 'IPmedia Parameters' page (Configuration tab > Protocol
Configuration menu > IP Media submenu > IPMedia Parameters). Note that each
B2BUA session comprises two legs.
Figure 9-11: IPmedia Parameters Page
3. Configure the voice WAN IP address to 10.33.2.105 in the 'WAN IP Address' field of
the 'General Settings' page (Configuration tab > Protocol Configuration menu >
SBC submenu > General Settings).
Figure 9-12: Configuring WAN IP Address in General Settings Page
4. Configure two Media Realms for RTP traffic - one for the LAN and one for the WAN -
in the 'SIP Media Realm Table' page (Configuration tab > Protocol Configuration
menu > SBC submenu > SRD Table), as shown below:
Figure 9-13: LAN and WAN Media Realms in SIP Media Realm Table
5. Configure two SRD's and associate them with the Media Realms in Step 2 - one for
the LAN and one for the WAN - in the 'SRD Table' page (Configuration tab >
Protocol Configuration menu > SBC submenu > SRD Table), as shown below:
Figure 9-14: SRDs for LAN and WAN in SRD Table
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