AudioCodes Mediant 3000, User Manual

Page: 225 / 872

Version 6.6 225 Mediant 3000
User's Manual 16. Control Network
16 Control Network
This section describes configuration of the network at the SIP control level.
16.1 Configuring SRD Table
The SRD Settings page allows you to configure up to 32 signaling routing domains (SRD).
An SRD is configured with a unique name and assigned a Media Realm. Additional SBC
attributes such as media anchoring and user registration can also be configured.
An SRD is a set of definitions together creating multiple, virtual multi-service IP gateways:

Multiple and different SIP signaling interfaces (SRD associated with a SIP Interface)
and RTP media (associated with a Media Realm) for multiple Layer-3 networks. Due
to the B2BUA nature of the SBC application, different interfaces can be assigned to
each leg of the call.

Can operate with multiple gateway customers that may reside either in the same or in
different Layer-3 networks as the device. This allows separation of signaling traffic
between different customers. In such a scenario, the device is configured with multiple
SRD's.
Typically, one SRD is defined for each group of SIP UAs (e.g. proxies, IP phones,
application servers, gateways, and softswitches) that communicate with each other. This
provides these entities with VoIP services that reside on the same Layer-3 network (must
be able to communicate without traversing NAT devices and must not have overlapping IP
addresses). Routing from one SRD to another is possible, whereby each routing
destination (IP Group or destination address) indicates the SRD to which it belongs.
Once configured, you can use the SRD as follows:

Associate it with a SIP Interface (see 'Configuring SIP Interface Table' on page 227 )

Associate it with an IP Group (see 'Configuring IP Groups' on page 230 )

Associate it with a Proxy Set (see 'Configuring Proxy Sets Table' on page 238 )

Apply an Admission Control rule to it (see Configuring Admission Control Table on
page
436 )

Define it as a Classification rule for the incoming SIP request (see 'Configuring
Classification Rules' on page
440 )

Use it as a destination IP-to-IP routing rule (see 'Configuring SBC IP-to-IP Routing' on
page
446 )
The SRD Settings page also displays the IP Groups, Proxy Sets, and SIP Interfaces
associated with a selected SRD index.
Notes:
•
On the SRD Settings page, you can also configure a SIP Interface in the
SIP Interface table, instead of navigating to the SIP Interface Table page
as described in 'Configuring SIP Interface Table' on page
227 .
•
The SRD table can also be configured using the table ini file parameter,
SRD.