SIP User's Manual 550 Document #: LTRT-12804
Mediant 800 MSBG
8.4.10.1.5 Step 5: Configure Multiple SIP and RTP Interfaces
The procedure below describes how to configure multiple SIP signaling interfaces and RTP
interfaces. The SIP signaling interfaces are defined as SIP Interfaces; the RTP interfaces
are defined as Media Realms. These are associated together under one entity termed SRD
(Signaling Routing Domain). In the case study, you need to define the following SRD's:
LAN SRD: IP address 10.8.6.86 ("Voice") with SIP signaling interface port 5080 and
RTP traffic port range 6000-6190.
WAN SRD: IP address 100.33.2.105 ("WAN") with SIP signaling interface port 5060
and RTP traffic port range 7000-8000.
¾ To configure multiple SIP signaling and RTP interfaces:
1. Configure Media Realms (RTP traffic interfaces) for LAN and WAN legs:
a. Open the 'SIP Media Realm Table' page (Configuration tab > VoIP menu >
Media submenu > Media Realm Configuration).
b. Add a Media Realm for LAN:
a. In the 'Media Realm Name' field, enter "LanMediaR".
b. In the 'IPv4 Interface Name' field, enter "Voice". Note: This string must be
identical (and case-sensitive) as that defined in the 'Multiple Interface' table
for the 'Interface Name' field (see ''Step 1: Configure LAN VoIP IP Address''
on page 547).
c. In the 'Port Range Start' fie
ld, enter "6000".
d. In the 'Number of Media Session Legs' field, enter the number of sessions
required on LAN (e.g., 20).
e. Click Submit. Note that the 'Port Range End' field value is automatically
calculated (e.g. 6190). For example, the first session uses port 6000, the
second session uses port 6010, and so on.
c. Add a Media Realm for WAN:
a. In the 'Media Realm Name' field, enter "WanMediaR".
b. In the 'IPv4 Interface Name' field, enter "WAN". This string is case-sensitive
and represents the WAN IP address (interface).
c. In the 'Port Range Start' field, enter "7000".
d. In the 'Number of Media Session Legs' field, enter the number of sessions
required on WAN (e.g., 101).
e. Click Submit. Note that the 'Port Range End' field value is automatically
calculated (e.g. 8000). For example, the first session uses port 7000, the
second session uses port 7010, and so on.
Figure 8-63: LAN and WAN Media Realms in SIP Media Realm Table
2. Configure SRD's for LAN and WAN:
a. Open the 'SRD Table' page (Configuration tab > VoIP menu > Control Network
submenu > SRD Table).
b. Add SRD #0 for LAN:
a. In the 'Name' field, enter "LanSRD".
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