0x000F Router Protocol ID

Used in:
VoIP Protocol Configure message
VoIP Protocol Query message
0x1E and 0x001E Generic PPL ICBs in Route Control message

Byte | Description
0, 1 | Tag 0x000F Router Protocol ID
2, 3 | Length 0x0001
4 | Value[0] Router Protocol ID 0x0B (default)

Voice over Internet Protocol. The delivery of voice information in digital form in discrete packets rather than in the traditional circuit-committed protocols of the public-switched telephone network (PSTN).
See Programmable Protocol Language.