There is also a form of LAN / MAN Management Protocol ( LMMP ), formerly it was the " Common Management Information Services and Protocol over IEEE 802 Logical Link Control ( CMOL ) ".
42.
This " change-on-zero " is used by High-Level Data Link Control and USB . They both avoid long periods of no transitions ( even when the data contains long sequences of 1 bits ) by using zero-bit insertion.
43.
The most common alternatives for SNA with SDLC were probably DECnet with Digital Data Communications Message Protocol ( DDCMP ), Burroughs Network Architecture ( BNA ) with Burroughs Data Link Control ( BDLC ), and ARPANET with IMPs.
44.
In contrast to GPRS, the Radio Link Control ( RLC ) and Media Access Control ( MAC ) headers and the payload data are coded separately in EGPRS . The headers are coded more robustly than the data.
45.
In particular, MAC is joined with the logical link control ( LLC ) sublayer to form the link layer, responsible for encryption / decryption, PHY error management and synchronization, while PHY itself covers the correctness of headers, not payloads.
46.
In the previous releases of GPRS ( pre-Release 00 ), a connection is identified by NSAPI and a Logical Link Control ( LLC ) protocol SAPI . However, in UMTS, and thus in GPRS Release 00, the LLC protocol is no longer used.
47.
Houston Automated Spooling Program ( HASP ) uses Bisync half-duplex hardware in conjunction with its own link control protocol to provide full-duplex multi-datastream communication between a small computer and a mainframe running HASP . In Bisync terms, this is " conversational mode ".
48.
This layer is broken into two sub-layers; the Logical Link Control ( LLC ) on the upper half, which does the error checking and the Medium Access Control ( MAC ) on the lower half, which gets the data on and off the wire.
49.
Furthermore, the standards suggest that when hosts choose to include type information in the packet, they should use a standard IEEE 802.2 " Logical Link Control " ( LLC ) header, followed by a " Subnetwork Access Protocol " ( SNAP ) header if necessary.
50.
Odd-1 means that the character is a link control character . 00 is the flow control character FCC, 01 is a normal end of packet EOP, 10 is an exceptional end of packet EEOP, and 11 is an escape character ESC . A NULL is the sequence " ESC FCC ".
