Common use of Protocol Stack Clause in Contracts

Protocol Stack. The bundle operates in conjunction with the Q.922 data link layer. It emulates the functions of the physical layer. Figure 3 illustrates the relationship between the bundle and the other elements of the protocol stack. The Data Link Layer multiplexes frames from the different data link connections, including the data link connection assigned to signaling for the C-Plane. Frames are exchanged with the bundle Layer which emulates a physical interface for the transport of frames. The bundle Layer assigns frames to one or more bundle links for transport to the peer over a real instance of a Physical Layer. The bundle Layer may dispatch frames ove r any bundle link. The receiving bundle Layer must ensure that a data link connection's frame order is preserved. The bundle Layer may also implement fragmentation procedures to limit the maximum size of a frame transmitted over a bundle link. Switching Layer -or- Layer 3 Applications (e.g. IP) Switching Layer -or- Layer 3 Applications (e.g. IP) U-Plane (Note 3) C-Plane - Q.933 (Note 1) Q.922 (Note 2) U-Plane (Note 3) C-Plane - Q.933 (Note 1) Q.922 (Note 2) Data Link (DL) - Q.922 Data Link (DL) - Q.922 Bundle (B) Bundle (B) Bundle Link (BL) Bundle Link (BL) Bundle Link (BL) Bundle Link (BL) Bundle Link (BL) Bundle Link (BL) Physical (PH) Physical (PH) Physical (PH) Physical (PH) Physical (PH) Physical (PH) Note 1: C-Plane operation as described in Q.933 [9] and FRF.4 [11] Note 2: Mutiple frame acknowledged information transfer mode as described in Q.922 [7] Note 3: Core aspects for use with frame relaying bearer service as described in Q.922, Annex A [7]

Protocol Stack. The bundle operates in conjunction with the Q.922 data link layer. It emulates the functions of the physical layer. Figure 3 illustrates the relationship between the bundle and the other elements of the protocol stack. The Data Link Layer multiplexes frames from the different data link connections, including the data link connection assigned to signaling for the C-Plane. Frames are exchanged with the bundle Layer which emulates a physical interface for the transport of frames. The bundle Layer assigns frames to one or more bundle links for transport to the peer over a real instance of a Physical Layer. The bundle Layer may dispatch frames ove r over any bundle link. The receiving bundle Layer must ensure that a data link connection's frame order is preserved. The bundle Layer may also implement fragmentation procedures to limit the maximum size of a frame transmitted over a bundle link. Switching Layer -or- Layer 3 Applications (e.g. IP) Switching Layer -or- Layer 3 Applications (e.g. IP) U-Plane (Note 3) C-Plane - Q.933 (Note 1) Q.922 (Note 2) U-Plane (Note 3) C-Plane - Q.933 (Note 1) Q.922 (Note 2) Data Link (DL) - Q.922 Data Link (DL) - Q.922 Bundle (B) Bundle (B) Bundle Link (BL) Bundle Link (BL) Bundle Link (BL) Bundle Link (BL) Bundle Link (BL) Bundle Link (BL) Physical (PH) Physical (PH) Physical (PH) Physical (PH) Physical (PH) Physical (PH) Note 1: C-Plane operation as described in Q.933 [9] and FRF.4 [11] Note 2: Mutiple frame acknowledged information transfer mode as described in Q.922 [7] Note 3: Core aspects for use with frame relaying bearer service as described in Q.922, Annex A [7]