Reason Header; Numbering Plans And Type Of Number - AudioCodes Mediant 800B User Manual

Parameter
Orig. Q.850 Causes
q850-causes
[CauseMapIsdn2Isdn_OrigIsdnReleaseCause]
Map Q.850 Causes
q850-causes
[CauseMapIsdn2Isdn_MapIsdnReleaseCause]

24.8.4 Reason Header

The device supports the SIP Reason header according to RFC 3326. The Reason header
describes the disconnection cause of a call:

Sending Reason header: If a call is disconnected from the Tel side (ISDN), the
Reason header contains the value of the received Q.850 cause in the appropriate
message (BYE/CANCEL/final failure response) and sent to the IP side. If the call is
disconnected because of a SIP reason, the Reason header is set to the appropriate
SIP response.

Receiving Reason header: If a call is disconnected from the IP side and the SIP
message includes the Reason header, it is sent to the Tel side according to the
following logic:
•
If the Reason header includes a Q.850 cause, it is sent as is.
•
If the Reason header includes a SIP response:
♦
♦
•
When the Reason header is received twice (i.e., SIP Reason and Q.850), the
Q.850 takes precedence over the SIP reason and is sent to the Tel side.
24.9

Numbering Plans and Type of Number

The IP-to-Tel destination or source number manipulation tables allow you to classify
numbers by their Numbering Plan Indication (NPI) and Type of Number (TON). The device
supports all NPI/TON classifications used in the ETSI ISDN variant, as shown in the table
below:
NPI
Unknown [0]
E.164 Public
[1]
International-Level2 Regional
User's Manual
If the message is a final response, the response status code is translated to
Q.850 format and passed to ISDN.
If the message isn't a final response, it is translated to a Q.850 cause.
Table 24-13: NPI/TON Values for ETSI ISDN Variant
TON
Unknown [0]
Unknown [0]
[1]
Mediant 800B Gateway & E-SBC
Description
Defines the originally received ISDN Q.850 cause
code. For example, you can enter "127" (without
apostrophes) to represent cause code 127
Interworking, Unspecified.
The valid value (cause code) is 1 to 127.
Defines the ISDN Q.850 cause code to which you
want to change the originally received cause code.
For example, you can enter "16" (without
apostrophes) to represent cause code 16 Normal
Call Clearing.
The valid value (cause code) is 1 to 127.
Description
A valid classification, but one that has no information
about the numbering plan.
A public number in E.164 format, but no information
on what kind of E.164 number.
A public number in complete international E.164
format, e.g., 16135551234.
538 Document #: LTRT-10298