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參數資料
型號: W6690
廠商: WINBOND ELECTRONICS CORP
英文描述: ISDN S/T Interface Controller(ISDN S/T接口控制器)
中文描述: 綜合業務數字網的S / T接口控制器(綜合業務數字網S / T的接口控制器)
文件頁數: 25/76頁
文件大小: 471K
代理商: W6690
Preliminary W6690
Publication Release Date: March 1998
- 25 -
Revision A1
7.2.5.6 FAinfD_kfr
This is to test the number k of IX_I4noflag frames necessary for loss of frame alignment.
Info 4
Info 4
Info 3
Info 3
DEVICE
SETTINGS
RESULT
W6690
k = 2
Pass
7.2.5.7 Faregain
This is to test the number m of good frames necessary for regain of frame alignment. The TE regains
frame alignment at m+1 frame.
The W6690 achieves synchronization after 5 frames, i.e m = 4.
1
2
3
4
5
6
7
Info X
Info 4
Info 4
Info 4
Info 4
Info 4
Info 4
Info 4
Info 3
Info 3
Info 3
DEVICE
SETTINGS
RESULT
W6690
m = 4
Pass
7.2.6 Multiframe Synchronization
As specified by ITU-T I.430, the Q bit is transmitted from TE to NT in the position normally occupied
by the auxiliary framing bit (FA) in one frame out of 5, whereas the S bit is transmitted from NT to TE.
The S and Q bit positions and multiframe structure are shown in Table 7.6.
I3_SFL
I3_SFAL
Info 0
Info 3 with
FA =
1
F
A
= 1
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