Mapping Pstn Release Cause To Sip Response; Supported Radius Attributes - AudioCodes mediapack MP-500 User Manual

9.10

Mapping PSTN Release Cause to SIP Response

The device's FXO interface interoperates between the SIP network and the PSTN/PBX.
This interoperability includes the mapping of PSTN/PBX Call Progress Tones to SIP 4xx or
5xx responses for IP-to-Tel calls. The converse is also true - for Tel-to-IP calls, the SIP 4xx
or 5xx responses are mapped to tones played to the PSTN/PBX.
When establishing an IP-to-Tel call, the following rules are applied:
If the remote party (PSTN/PBX) is busy and the FXO device detects a Busy tone, it
sends 486 Busy to IP. If it detects a Reorder tone, it sends 404 Not Found (no route to
destination) to IP. In both cases the call is released. Note that if the parameter
DisconnectOnBusyTone is set to 0, the FXO device ignores the detection of
Busy/Reorder tones and doesn't release the call.
For all other FXS/FXO release types (caused when there are no free channels in the
specific Hunt Group, or when an appropriate rule for routing the call to a Hunt Group
doesn't exist, or if the phone number isn't found), the device sends a SIP response (to
IP) according to the parameter DefaultReleaseCause. This parameter defines Q.931
release causes. Its default value is '3', which is mapped to the SIP 404 response. By
changing its value to '34', the SIP 503 response is sent. Other causes can be used as
well.
9.11

Supported RADIUS Attributes

Use the following table for explanations on the RADIUS attributes contained in the
communication packets transmitted between the device and a RADIUS Server.
Attribute Attribute
Number Name
Request Attributes
1 User-Name
NAS-IP-
4
Address
Service-
6
Type
H323-
26 Incoming-
Conf-Id
H323-
26 Remote-
Address
SIP User's Manual
Table 9-5: Supported RADIUS Attributes
VSA
Purpose
No.
Account number or calling
party number or blank
IP address of the
requesting device
Type of service requested
1 SIP call identifier
IP address of the remote
23
gateway
510
MP-500 MSBG
Value
Example
Format
String
up to 15
5421385747
digits
long
Numeric 192.168.14.43
Numeric 1: login
Up to
32
octets
Numeric
Document #: LTRT-12801
AAA
1
Start
Acc
Stop
Acc
Start
Acc
Stop
Acc
Start
Acc
Stop
Acc
Start
Acc
Stop
Acc
Stop
Acc