Protocol-control information
In telecommunications, the term protocol-control information (PCI) has the following meanings:[1][2][3][4]
- The queries and replies among communications equipment to determine the respective capabilities of each end of the communications link.
- For layered systems, information exchanged between entities of a given layer, via the service provided by the next lower layer, to coordinate their joint operation.
References
<templatestyles src="Citation/styles.css"/>Script error: No such module "template wrapper".