AudioCodes Mediant 3000 User Manual page 327

User's Manual
As each SIP Interface defines a different Layer-3 network (see ''Configuring SIP Interfaces''
on page 337 for more information) on which to route or receive calls and as you can assign
multiple SIP Interfaces to the same SRD, for most deployment scenarios (even for multiple
Layer-3 network environments), you only need to employ a single SRD to represent your
VoIP network (Layer 5). For example, if your VoIP deployment consists of an Enterprise IP
PBX (LAN), a SIP Trunk (WAN), and far-end users (WAN), you would only need a single
SRD. The single SRD would be assigned to three different SIP Interfaces, where each SIP
Interface would represent a specific Layer-3 network (IP PBX, SIP Trunk, or far-end users)
in your environment. The following figure provides an example of such a deployment:
Version 7.0
Figure 18-6: Deployment using a Single SRD
327
18. Control Network
Mediant 3000