ZTE Corporation ZXG-BTS2 Manual Do Utilizador
ZXG10-BTS (V2.9) Technical Manual
62
Confidential and Proprietary Information of ZTE CORPORATION
F
I G U R E
3 7
L
I N K
R
E L E A S E
F
A I L U R E
MS
LAPDm
FURRM
HPIMan
LAPD
BSC
OAMM
Dm_DL_REL_REQ
DL_DATA_IND (REL REQ)
(REL REQ)
(DISC)
Dm_DL_REL_IND
DL_DATA_REQ (REL IND)
(REL IND)
Dm_MDL_ERR_IND
DL_DATA_REQ (ERR IND)
(ERR IND)
The BSC requests the release of one multi-frame-mode link layer
connection (SAPI=3) on the wireless path.
The BTS sends the DISC frame and starts the timer T200 at the same time.
If the UA or DM frame is not received when T200 expires, the DISC will be
resent and the resending times will increase by one. If the failure persists,
resent and the resending times will increase by one. If the failure persists,
the Dm_DL_RELEASE_INDICATION and MDL_ERROR_INDICATION
primitives from the data link layer will be received in L3. The latter
primitive records the failure cause: “Timer T200 expires for N200 + 1
primitives from the data link layer will be received in L3. The latter
primitive records the failure cause: “Timer T200 expires for N200 + 1
times: Execution released abnormally”.
Sending and Receiving of Transparent L3 Message in
Acknowledgment Mode
Acknowledgment Mode
The transmitting is shown in Figure 38.
F
I G U R E
3 8
S
E N D I N G A
T
R A N S P A R E N T
L 3 M
E S S A G E I N T H E
A
C K N O W L E D G M E N T
M
O D E
MS
LAPDm
FURRM
HPIMan
LAPD
BSC
OAMM
Dm_DL_DATA_REQ
(DATA REQ)
(I frames)
(RR frames)
DL_DATA_IND (DATA REQ)
The BSC requests to send a acknowledgment mode L3 transparent
message to the MS.