ISUB Encoding
The ISDN calling party subaddress parameters convey address information of each device in an ISDN network. The ISDN calling party subaddress can now be interworked into the SIP protocol using the isub and isub encoding parameters. By interworking these two parameters, the ISDN calling party subaddress as well as its encoding type can be passed between ISDN and SIP as well as SIP and ISDN. Below is more information pertaining to the interworking of these parameters.
Call Flow Diagrams
SIP to ISDN:
ISDN to SIP:
Mapping isub and isub encoding to ISDN Calling Party Subaddress
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