AudioCodes Mediant 4000 SBC User Manual page 280

been crossed.

Credentials for Authentication: The Routing Server can provide user (e.g., IP Phone
caller) credentials (username-password) in the Get Route response, which can be
used by the device to authenticate outbound SIP requests if challenged by the
outbound peer, for example, Microsoft Skype for Business (per RFC 2617 and RFC
3261). If multiple devices exist in the call routing path, the Routing server sends the
credentials only to the last device ("node") in the path.

QoS: The device can report QoS metrics per IP Group to the Routing server, which
the Routing server can use to determine the best route (i.e., QoS-based routing). For
more information, see Configuring QoS-Based Routing by Routing Server on page
281.

Call Preemption for Emergency Calls: If you enable call preemption for emergency
calls (e.g., 911) on the device, the routing server determines whether or not the
incoming call is an emergency call and if so, handles the routing decision accordingly
(i.e., preempts a non-emergency call if the maximum call capacity of the device is
reached in order to allow the emergency call to be routed). To enable call preemption
for emergency calls, use the parameter SBCPreemptionMode for SBC calls and
CallPriorityMode for Gateway calls.

To configure routing based on Routing server:
1. For each configuration entity (e.g., IP Group) that you want routing done by the
Routing server, configure the entity's 'Used By Routing Server' parameter to Used:
Figure 15-49: Configuring Entity to Use Routing Server
2. Configure an additional Security Administrator user account in the Local Users table
(see ''Configuring Management User Accounts'' on page 69), which is used by the
Routing server (REST client) to log in to the device's management interface.
3. Configure the address and connection settings of the Routing server, referred to as a
Remote Web Service and HTTP remote host (see ''Configuring Remote Web
Services'' on page 271). You must configure the 'Type' parameter of the Remote Web
Service to Routing, as shown in the following example:
Figure 15-50: Configuring Remote Web Service for Routing Server
4. In the IP-to-IP Routing table, configure the 'Destination Type' parameter of the routing
rule to Routing Server (see Configuring SBC IP-to-IP Routing Rules on page 499), as
shown below:
Figure 15-51: Configuring Routing Rule to use Routing Server
User's Manual 280
Mediant 4000 SBC
Document #: LTRT-40203