Configuring Enhanced Sip Gateway Features; Table 28.4 Table Default Pstn Cause Code To Sip Status Code Mapping - Samsung Ubigate iBG3026 Configuration Manual

Configuring Enhanced SIP Gateway Features

Configuring PSTN Cause Code Mapping
This section describes the method of mapping between SIP status code and
PSTN Cause code. For calls to be established between a SIP network and a
PSTN network, the two networks must be able to interoperate. One aspect of
their interoperation is the mapping of PSTN cause codes, which indicate
reasons for PSTN call failure or completion, to SIP status codes or events.
The opposite is also true: SIP status codes or events are mapped to PSTN
cause codes.
A Ubigate iBG3026 provides a SIP- PSTN default mapping table. The method for
an operator to change the mapping is also provided. You can change the mapping
using set pstn-cause command and set sip-status command. You can check the
current mapping table settings using the show sip-ua maps command.
Restrictions for PSTN Cause Code Mapping
Using the command described above, you can change the existing inter-code
mapping, not create a new code.
Default Mapping
Default PSTN Cause Code to SIP Status Code Mapping

Table 28.4 Table Default PSTN cause code to SIP status code mapping

PSTN Cause
Code
1
2
3
17
18
19
20
21
© SAMSUNG Electronics Co., Ltd.
Description
Unallocated number
No route to specified transit network
No route
User busy
No user response
No answer from the user
Subscriber absent
Call rejected
Ubigate iBG3026 Configuration Guide/Ed.00
404 Not found
404 Not found
404 Not found
486 Busy here
480 Temporarily
unavailable
480 Temporarily
unavailable
480 Temporarily
unavailable
403 Forbidden
SIP Event
373