0x2921 NPDI SIP Refer to Port

Use this TLV in a PPL Event Request message that is used to generate a REFER message. This TLV specifies the referred target User Agent’s addressing information which is used to create the Refer-To header for the outbound REFER request. Use this TLV to specify the port in the Refer-To header.

Used in:
0x0033 NPDI Universal ICB in:
PPL Event Request message

Byte

Description

0, 1

Tag 0x2921

2, 3

Length 0x0004

:

Value[0] If this TLV is not present, the default 5060 is used.