AudioCodes E-SBC User Manual

CHAPTER34 Routing SBC
Mediant 1000 Gateway & E-SBC | User's Manual
● This section is applicable only to the SBC application.
● The device issues itself the SIP response code 408 when no response is received
from a sent SIP message.
● If the device receives a SIP 408 response, an ICMP message, or no response,
alternative routing is still performed even if the code is not configured in the
Alternative Routing Reasons table.
● SIP requests belonging to an SRD or IP Group that have reached the call limit
(maximum concurrent calls and/or call rate) as configured in the Call Admission
table are sent to an alternative route if configured in the IP-to-IP Routing table for
the SRD or IP Group. If no alternative routing rule is located, the device
automatically rejects the SIP request with a SIP 480 (Temporarily Unavailable)
response.
The following procedure describes how to configure the Alternative Routing Reasons table through
the Web interface. You can also configure it through ini file [SBCAlternativeRoutingReasons] or
CLI (configure voip > sbc routing sbc-alt-routing-reasons).
➢ To configure SIP reason codes for alternative IP routing:
1. Open the Alternative Routing Reasons table (Setup menu > Signaling & Media tab > SBC
folder > Routing > Alternative Reasons).
2. Click New; the following dialog box appears:
3. Configure a SIP response code for alternative routing according to the parameters described in
the table below.
4. Click Apply.
Table 34-3: Alternative Routing Reasons Table Parameter Descriptions
Parameter Description
'Index'
[SBCAlternativeRoutingReasons_
Index]
Defines an index number for the new table row.
Note: Each row must be configured with a unique index.
'Name'
alt-res-name
[SBCAlternativeRoutingReasons_
AltReasonName]
Defines an arbitrary name to easily identify the row.
The valid value is a string of up to 20 characters.
Note: Each row must be configured with a unique name.
'Release Cause'
rel-cause
[SBCAlternativeRoutingReasons_
ReleaseCause]
Defines a SIP response code that triggers the device's
alternative routing mechanism.
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AudioCodes E-SBC Specifications

General

Brand	AudioCodes
Model	E-SBC
Category	Gateway
Language	English