xây dựng tiêu chuẩn về rung phavà trôi pha (jitter and wander) cho giao diện số theo phân cấp đồng bộ pdh và sdh
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BỘ THÔNG TIN VÀ TRUYỀN THÔNG
VIỆN KHOA HỌC KỸ THUẬT BƯU ĐIỆN
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Hà nội – 2010
Mục lục
Mở đầu
Thuật ngữ viết tắt
CHƯƠNG 1. NGHIÊN CỨU CÁC TIÊU CHUẨN LIÊN QUAN ĐẾN RUNG
PHA VÀ TRÔI PHA TRONG HỆ THỐNG PDH/SDH
CHƯƠNG 2. NGHIÊN CỨU XÂY DỰNG TIÊU CHUẨN VỀ RUNG PHA
VÀ TRÔI PHA
KHUYẾN NGHỊ ÁP DỤNG
PHỤ LỤC A: Phương pháp đo rung pha/trôi pha
PHỤ LỤC B: GIỚI THIỆU MỘT SỐ THIẾT BỊ ĐO
TÀI LIỆU THAM KHẢO
Đề tài: 95-07-KHKT-TC
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Đề tài: 95-07-KHKT-TC
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Đề tài: 95-07-KHKT-TC
iii
Từ viết
tắt
Từ tiếng Anh Nghĩa
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Đề tài: 95-07-KHKT-TC
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Đề tài: 95-07-KHKT-TC
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1.1.1.1 ITU-T G.703 - Đặc tính điện/vật lý của các giao diện phân cấp số
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1.1.2.1 ITU-T G.957 - Giao diện quang cho các thiết bị và hệ thống liên quan
đến phân cấp số đồng bộ
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Đề tài: 95-07-KHKT-TC
6
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1.1.3.1 ITU-T G.812 - Yêu cầu về đặc tính định thời của các đồng hồ tớ được
sử dụng làm các đồng hồ nút trong mạng đồng bộ
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Đề tài: 95-07-KHKT-TC
7
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1.1.3.2 ITU-T G.813 - Yêu cầu về đặc tính định thời của các đồng hồ tớ trong
thiết bị SDH (SEC)
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1.1.4.1 ITU-T G.823 - Yêu cầu về rung pha và trôi pha trong các mạng số dựa
trên phân cấp số 2048 kbit/s
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Đề tài: 95-07-KHKT-TC
8
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?j?7NBONBC<0?Hj?C?F9:K:LBC]7VH>9:Z?]7V<JL:V9N?GFGC?V^?UB
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1.1.4.2 ITU-T G.825 - Yêu cầu về rung pha và trôi pha trong các mạng số dựa
trên phân cấp số đồng bộ SDH
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LBC/V?:LBC]7VH>9:Z?]7V90?97?mLG8V97?a9qK<0?Hj?GFGC?V^?UB
cSLcSTBCH>C?V^?UB<PBCqE^tV9:IB]7sBG\]/0<PBCqE"(&
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Đề tài: 95-07-KHKT-TC
9
1.1.4.3 ITU-T G.783 - Đặc tính các khối chức năng của thiết bị SDH
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(@••H>GFGG7b9?IL<0?Hj?:LBC]7V`a97T]@LBC]7V`a97T]i<sW
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GB9:‹CsWBIB@
67LWaBBC7KB>WGABC<SV:VeL?<KB7<0?Hj?G7L‘?97yGB9:‹<STG/y^_BC
<m<:LBC]7V`a97T]
1.1.4.4 Tiêu chuẩn ETSI EN 302 084- điều khiển rung pha và trôi pha trong
mạng truyền tải
:BCONBC9:LW=B9~?X:LBC]7VH>9:Z?]7V<STG9wG7cAW^ŒG9:IBGFG<SvBC
9:LW=B^zc?UL^:LBC]7VX9:Z?]7VBE?9N?H><”G9wB77>O9:LW=B<N9G8VO‘?
97?a9qK9NBIB@
LBC]7VH>9:Z?]7V<8cjBG[97m~B77SiBCq\9cT?<aBG~9wB7?UL/0"Hw^_
B7SXCsW:Vc‘?qw9X`7ZBC<?=L`7?mB<STGB‘?H>GFG7?UB9STBCq\997SvBC`7FG&
H>GFG9wB7?UL9SDBC9t"Hw^_B7S<?=LG7a]7V`7ZBCOBCOL0BG8V9wB7?UL
<STG9:LW=B&@7ZBC97SvBCX~B77SiBCB7S97a]7_97LEGH>^KG7H_G_97m
<STGGLBCG\]H>97?a9qK<JLGL0?7”G97?a9qK97wG7RBCG[c?IBeLVB@
;97aGJB97?a9]7~?97?a9ch]C?j?7NB:LBC]7VX9:Z?]7V9N?GFGC?V^?UBONBC
<m<~Oq~G7\9cSTBC9wB7?UL<STG9:LW=BH>7N9<EBCG8V97?a9qK@
ƒLVB<?mO<?=L`7?mB:LBC]7VH>9:Z?]7VG8V9?ILG7LpBB>W^tV9:IBWIL
GJL1
• KB7:šC?j?7NB:LBC]7VH>9:Z?]7VGtG<N?G8VONBCO>`7ZBC<STG
cjB7DB9N?q\9`;C?V^?UBc?IBeLVBB>@
• KB7:š^LBC/V?97?a9qKB7‹B7\9<0?Hj?:LBC]7VH>9:Z?]7VGJB<STG
GLBCG\]9N?q\9`;C?V^?UBc?IBeLVB@
• 7?a9ch]OE9GDG\LB7\9eLFBG7G7b9?IL`–97Lh9G8VGFGcN?97?a9qK/0
:?IBC:“@
• LBCG\]<897ZBC9?BH>7SjBC^xB<H>BC7?IBGRLGFG<”G9wB7:LBC
]7VX9:Z?]7V9:BCq\9`;G\L7;B7ONBCB>@
E?^LBCG8V9?ILG7LpBB>W<.<STGG7\]97LhB<SVH>GFG`7LWaBBC7K
@ˆ34H>@ˆ3‰
1.1.4.5 Tiêu chuẩn ETSI EN 300 462-3 - điều khiển rung pha và trôi pha
trong mạng đồng bộ
ABC9SDBC9tB7S9?ILG7LpB$($43ˆ‡<SV:VWILGJLG79wB7?ULcSL
cSTBCX$(<SV:VGFGWILGJLG7:LBC]7VH>9:Z?]7VG7GFGC?V^?UBG\]
9wB7?UL<PBCqE9:BCONBC<PBCqE@FGWILGJL<SV:VqVCPOGFGG7b9?IL
:LBC]7VH>9:Z?]7V9N?GFGC?V^?UBONBCG8VGFG97?a9qK X((X($H>
Đề tài: 95-07-KHKT-TC
10
@
E?^LBCG8V9?ILG7LpBB>W<.<STGG7\]97LhB<SVH>`7LWaBBC7K
@ˆ34@
~BC/VLG7b:V/t//FB7H>FB7rNGFG]7JBBE?^LBCG8VGFG9?ILG7LpB$(
H>H=:LBC]7VH>9:Z?]7V@ƒLV<[G797\WGFG`7LWaBBC7KG8V
G7wB7c>q~BG7\]97LhB9˜GFG9?ILG7LpB$(<=rL\99SDBCRBCH><STGq0
G_GXGh]B7h9Oj?7DB@
Đề tài: 95-07-KHKT-TC
11
Bảng 1-1 Bảng <0? chiếu giữa các tiêu chuẩn ETSI và ITU về Rung pha và trôi pha
G.823 (03/2000) G.825(03/2000) ETSI EN 302 084 V1.1.1
(2000-02)
EN 300 462-3-1 V1.1.1
(1998-05)
2(G]k 2 (G]k 2 (G]k 2 (G]k
3 k•k:kBGk/ 3 k•k:kBGk/ 3 k•k:kBGk/ 3 :OV9?Hk
:k•k:kBGk/
4 k•?B?9?B/ 4 k•?B?9?B/ 4 k•?B?9?B/VB^
Vqq:kH?V9?B/
4 k•?B?9?B/X
/WOqc/VB^
Vqq:kH?V9?B/
‡ !qq:kH?V9?B/ ‡ !qq:kH?V9?B/ 4@2 k•?B?9?B/ 4@2 k•?B?9?B/
4@3 !qq:kH?V9?B/ 4@3 (WOqc/
4@4 !qq:kH?V9?B/
5 Network limits for
traffic interfaces
5 Network limits for the
maximum output jitter and
wander at any hierarchical
interface
5 Network limits for
output jitter and wander
‰@2 k9•:`c?O?9/•:
L9]L9›?99k:V99:V••?G?B9k:•VGk/
‰@2 k9•:`c?O?9/•:›?99k: ‰@2 k9•:`c?O?9/•:
L9]L9›?99k:
‰@3 k9•:`c?O?9/•:
L9]L9•VB^k:V99:V••?G
?B9k:•VGk/
‰@3 k9•:`c?O?9/•:
L9]L9•VB^k:
Đề tài: 95-07-KHKT-TC
12
‰@3@2 3‡ˆ`q?9o/?B9k:•VGk
L9]L9•VB^k:c?O?9
‰@3@2 3‡ˆ`q?9o/?B9k:•VGk
L9]L9•VB^k:c?O?9
‰@3@3 4‡4Šˆ`q?9o/?B9k:•VGk
L9]L9•VB^k:c?O?9
‰@3@3 4‡4Šˆ`q?9o/?B9k:•VGk
L9]L9•VB^k:c?O?9
‰@3@4 2453Š‡`q?9o/?B9k:•VGk
L9]L9•VB^k:c?O?9
‰@3@4 2453Š‡`q?9o/?B9k:•VGk
L9]L9•VB^k:c?O?9
‰@3 k9•:`c?O?9/•:
•VB^k:
‰@3@‡ (-?B9k:•VGk
L9]L9•VB^k:c?O?9
6 Network limits for
synchronization interfaces
• k9•:`c?O?9/•:
›?99k:VB^•VB^k:V9
/WBG7:B?’V9?B
?B9k:•VGk/
7 Jitter and wander
tolerance of network
interfaces
•@2 #?99k:VB^•VB^k:
9ck:VBGk•9:V••?G?B9k:•VGk/
6 Jitter and wander
tolerance of equipment
interfaces
•@2@2 Š‡`q?9o/?B]L9›?99k:VB^
•VB^k:9ck:VBGk
Š@2 Š‡`q?9o/?B]L9›?99k:VB^
•VB^k:9ck:VBGk
•@2@3 3‡ˆ`q?9o/?B]L9›?99k:
VB^•VB^k:9ck:VBGk
Š@3 3‡ˆ`q?9o/?B]L9›?99k:
VB^•VB^k:9ck:VBGk
•@2@4 ˆ‡‡ˆ`q?9o/?B]L9›?99k:
VB^•VB^k:9ck:VBGk
Š@4 ˆ‡‡ˆ`q?9o/?B]L9›?99k:
VB^•VB^k:9ck:VBGk
Đề tài: 95-07-KHKT-TC
13
•@2@‡ 4‡4Šˆ`q?9o/?B]L9›?99k:
VB^•VB^k:9ck:VBGk
Š@‡ 4‡4Šˆ`q?9o/?B]L9
›?99k:VB^•VB^k:9ck:VBGk
•@2@‰ 2453Š‡`q?9o/?B]L9
›?99k:VB^•VB^k:9ck:VBGk
Š@‰ 2453Š‡`q?9o/?B]L9
›?99k:VB^•VB^k:9ck:VBGk
•@3 #?99k:VB^•VB^k:
9ck:VBGk•/WBG7:B?’V9?B
?B9k:•VGk/
Š@2 #?99k:VB^•VB^k:
9ck:VBGk•:(-?B]L9
]:9/
Š@Š (-?B]L9›?99k:VB^
•VB^k:9ck:VBGk
Annex A Network model
underlying the
synchronization network
limit
4 Basic philosophy for
the control of jitter and
wander
5 Synchronization
interfaces
6 Synchronization
reference network
Annex B (informative):
Network model
underlying the network
limit
Annex B Network wander
reference model and
parameters
4 Network wander
specification
Appendix I Wander limit
considerations for SDH
transport networks
Annex A (informative):
Wander limit
considerations for SDH
Đề tài: 95-07-KHKT-TC
14
transport networks
Appendix II Measurement
methodologies for output
wander
Appendix II Measurement
methodology for output
wander of synchronous
interfaces
Annex B (informative):
Measurement
methodologies for output
wander
Appendix III Measurement
guidelines for input jitter and
wander tolerance of
equipment interfaces
Annex C (informative):
Measurement
guidelines for input jitter
and wander tolerance of
equipment interfaces
Appendix I Relationship
between network interface
jitter requirements and input
jitter tolerance
Annex D (informative):
Relation between
parameters for input jitter
tolerance and output jitter
limits
Đề tài: 95-07-KHKT-TC
15
O34546=33PQRS
1.1.5.1 ITU-G.826 Tham số và chỉ tiêu chất lượng lỗi cho các luồng và kết
nối số quốc tế tốc độ bit không đổi
7?IBq~B<JL9?IBG8V@ˆ3Š:V<v?H>97FBC•o25ˆ4@ 7?IBq~BB>WG[9IBc>
œ7VO/0H>G7b9?ILG7\9cSTBCG7cLPBC/0eL0G9aG[90G<Eq?9`7ZBC<}?
cjB7DB7”GqgBC90G<EGD/i"2‰‡‡7”G3‡ˆ`q?9o/&•
aB97FBC23o33OE9]7?IBq~BOj?G8V@ˆ3Š<.:V<v?Hj?9IBc>œ7VO/0
H>G7b9?ILG7\9cSTBCG7GFGcLPBCH>`a9B0?/0eL0G9a90G<Eq?9`7ZBC<}?•@
j?]7?IBq~BOj?B>WX@ˆ3Š<.Oi:EBC]7NOH?F]^_BCG8VO;B7G7G~GFG
cLPBCo`a9B0?G[90G<EB7‹7DB90G<EGD/i"H;HhW`7LWaBBC7K@ˆ32G7b
<STGF]^_BCG7GFG`a9B0?C?zVGFG97?a9qK<STG/~BrL\99:SjG33&
FGG7b9?IL<STG<SV:V9:BC`7LWaBBC7KB>W`7ZBC]7_97LEGH>ONBCHh9
cuGLBCG\]cLPBCH>`a9B0?@FGG7b9?ILB>W]7~?<STG<~Oq~G7G~3
7SjBC9:LW=B^xBG8VcLPBCo`a9B0?H>^tV97k]7sBq}G7cLPBC/0eL0G9a
C?~<KB7G7LpB3•‰`O@@
j?GFGcLPBC/0c>OH?UG9N?90G<Eq?9cjB7DB7”GqgBC90G<Eq?9GD/iXGFG
G7b9?IL<SV:V9:BC`7LWaBBC7KB>W<STG^tV9:IB`7F?B?UO<c‘?`70?/y
^_BCGFGO.]7F97?UBc‘?G[/žB9:BCcLPBCGJB`?mO9:V@7v<[G[97m97tG
7?UB<9:BCeLF9:;B7`7V?97FG^KG7H_@dB<0?Hj?GFG`a9B0?/0G[90G<E
B7‹7DB90G<EGD/iG8V]7sBG\]/0XGFGG7b9?IL<SV:V^tV9:IB`7F?B?UO<
c‘?q?9H>H;HhW`7ZBC7‘9:TH?UG<9:BCeLF9:;B7`7V?97FG^KG7H_@
FG97VO/0G7\9cSTBC<STG<SV:VqVCPO1$(X($(X$@Thời gian
đo các tham số này được khuyến nghị là 1 tháng.
1.1.5.2 ITU-T G.828 Tham số và chỉ tiêu chất lượng cho các luồng SDH quốc
tế tốc độ bit không đổi
67LWaBBC7KB>W:V<v?97FBC4o3B7gOC?~?eLWa9GFG7NBG7aG8V@ˆ3Š
`7?F]^_BCG7H?UG<FB7C?FG7\9cSTBCc‘?G8VGFGcLPBC(@67FGq?U9G8V
@ˆ3ˆ/Hj?@ˆ3Š<STG97m7?UBiGFG<?mO/VL1
FGG7b9?IL<SV:V9:BC`7LWaBBC7KB>W<STGrFG<KB7G_97mG79˜BC
cLPBC("9:BC@ˆ3ŠXGFGG7b9?IL<STGeL?<KB7G72^~?90G<E&@
IBGNB7GFG97VO/0G7\9cSTBCB7SG8V@ˆ3Š"$(X($(X$&X@ˆ3ˆ
GdB<SV97IO97VO/0($ "Hj?/t`?UBc‘?($ <STG<KB7BC7–Vc>G7L`Ÿ
Đề tài: 95-07-KHKT-TC
16
O>9:BC<[G[90?97?mL4"B7SBCw97DB5&($(rL\97?UBc?IB9?a]&@LW
B7?IBGFGC?F9:KG8V97VO/0B>WHxB<STG9?a]9_GBC7?IBGRL@
1.1.5.3 ITU-T M.2110 Hoà mạng hệ thống truyền dẫn, đoạn và luồng
67LWaBBC7KB>W<SV:VeL?9:;B77>ONBCGFG97tG97m9:LW=B^xB9:BCOZ?
9:SvBCG[B7?=LB7>`7V?97FG@FG97tG97m9:LW=B^xBi<sWqVCZOcLPBCX
<NBH>7U970BC9:LW=B^xB@ƒL?9:;B77>ONBCi<sW<STG]7sBq?U9G73
9:SvBC7T]1<0?Hj?7U970BCG[o`7ZBCG[`7~B—BCC?FO/F99:BCeLF9:;B7`7V?
97FG^KG7H_"(-&@
7k`7LWaBBC7KB>W<m7>ONBCGFG97tG97m9:LW=B^xBGJB]7~?97tG7?UB
OE9/0GFG]7Ž]<@FG]7Ž]<B>WC7?cN?/0GFG/t`?UBG7\9cSTBCr~W:V
9:BCB7zBC`7~BC97v?C?VBB7\9<KB7H>//FB7`a9eL~B>WHj?GFGC?F9:K
C?j?7NB@FGC?F9:KC?j?7NBB>Wc>`7FGB7VL<0?Hj?GFG/t`?UBG7\9cSTBCH>
Hj?GFG]7Ž]<`7FGB7VL@FG]7Ž]<`7FGB7VLi<sWc>]7Ž]<`?mO9:V
9wB7c?IB9_GG8V9LWaB"97v?C?VB<90?<Vc>2‰]7™9&X<2‰]7™9X<37H><
3‡7]7~?<STGF]^_BCG79˜BC7SjBC9:LW=B^xB@\9GR`7?B>G[97mXBIB
/y^_BCG\L7;B7<G7G79˜BC7SjBC9:LW=B^xB:?IBCq?U9"9RGc>`7ZBC
97tG7?UB<\LHdBC9N?<JLrV9:BCeLF9:;B7<&@
1.1.5.4 ITU-T M.2101 - Giới hạn chất lượng cho hoà mạng và bảo dưỡng
luồng và đoạn ghép kênh SDH
:BC:\9B7?=L9:SvBC7T]XH?UG<9:BC97v?C?VB297FBCc>`7ZBC97m97tG
7?UB<STG@;HhW`7LWaBBC7K-@322<.<SV:VGFGC?j?7NBH=G7\9cSTBCG7
GFG`7~BC97v?C?VB<BCnB7DBX9:IBGD/i^tV97kG7b9?IL@ˆ3Šo@ˆ3ˆ@
T458U44I4
$<.<SV:VGFGeL?<KB7XOVBC9wB7G7\9eL?]7NOqn9qLEGF]^_BCG7
GFGBSjG97>B7H?IBH=`IB797LI:?IBC ‡¡ ‰¡/y^_BC9:BCH?YB97ZBC19˜
`IB7VBVcCXŠ‡`q?9o/X3‡ˆ`q?9o/H>(@=`IB797LI:?IBC(X$F]
^_BC97k39?ILG7LpB1
$($422Š‡1¢:VB/O?//?BVB^-Lc9?]ckr?BC"-&€(WBG7:BL/
?C?9Vc?k:V:G7W"(&€(ckV/k^c?Bk/€BBkG9?BG7V:VG9k:?/9?G/¢@
?ILG7LpBB>W<SV:VGFGWILGJL`•97Lh9H>GFG]7Ž]<G_97mH=G7\9
cSTBC`IB797LI:?IBCG\L9:™GHG23XHG3XHG4XHG‡
$422Š‰1¢:VB/O?//?BVB^-Lc9?]ckr?BC"-&€(WBG7:BL/?C?9Vc
?k:V:G7W "(&1 ( ckV/k^ c?Bk/€ k9•:` VB^ 9k:O?BVc ?B9k:•VGk
]:k/kB9V9?B¢@
Đề tài: 95-07-KHKT-TC
17
?ILG7LpBB>W<SV:V^VB7/FG7GFGWILGJLOVBC9wB7G7\997VOG7?aL<aBGFG
9?ILG7LpB`7FGB7SH=C?V^?UB<?IBoeLVBC"@•4X@5‰•&XG\L9:™GC7Ž]
`IB7"@••&l
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<PBCqE"(&
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`7LBCH>G\L9:™GC7Ž]`IB7
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'@2•2H>2•37?a9qK<:LBC]7VH>9:Z?]7VG7GFG7U970BC/0
^tV9:IB]7sBG\]/0<PBCqE
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ONBC
TT Tên Quy chuẩn kỹ thuật Mã số Tình trạng
Về hệ thống, công nghệ SDH
2
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Đề tài: 95-07-KHKT-TC
18
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<}?/VBCƒL?
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Đề tài: 95-07-KHKT-TC
19
7b9?ILC?V^?UBeLVBCG7GFG7U970BC<DB`IB790G<E(-2X(-
‡X(-2ŠHj?GFGRBC^_BCX(XQXX9:IBGFG/T?@Š‰3X@Š‰4X
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ONBCH?YB97ZBC?U9BVO@
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eLVBCX9?ILG7LpBB>WG7bF]^_BCG7GFG7U970BC/y^_BC`7LaG7^N?GZBC
/L\9H>o7”G97?a9qK9?=B`7LaG7<N?@
FGG7b9?IL<SV:V9:BC9?ILG7LpBB>WqVCPO1
?ILG7LpBC?V^?UBeLVBC<0?Hj?GFG7U970BC`7ZBC/y^_BC`7LaG7
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Đề tài: 95-07-KHKT-TC
20
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<= 9>?1 ('‚X ‚ (! ƒ
6£¤!-X /015‰•Š•66
• 3¡
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/090G<E3‡ˆ`q?9o/H>C?V^?UB9wB7?UL<PBCqE3‡ˆ`’@
67LWaBBC7KB>WeLW<KB7GFGWILGJLH=C?V^?UB<?UBoHh9cuG8V]7sBG\]/0@
67LWaBBC7K@•4<STGq}/LBC/yV<}?B—O32@
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Tài liệu áp dụng : @•4X 7W/?GVco$ckG9:?GVc 7V:VG9k:?/9?G/ •
?k:V:G7?GVc?C?9VcB9k:•VGk/
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G7LpBOj?9:IBGD/i1Šˆ2•31255•`a97T]Hj?Šˆ2•‰1255ˆH>
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ILGJL`•97Lh9H=<?UBXHh9cu@}rLBC97IO]7JBG\L9:™G`7LBCG8VGFG
C?V^?UB@
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B7zBCWILGJL90?97?mLG7<PBC7PG78<mG\]9wB7?UL<PBCqEG7ONBC/0@
B>W^}BCG_GSL<?UBqVB7>B7BC>W3597FBC5B—O255ˆ@
Các tài liệu gốc:
@ˆ22X?O?BCG7V:VG9k:?/9?G/•]:?OV:W:k•k:kBGkGcG`/
67LWaBBC7KB>W<SV:VB7zBCWILGJL90?97?mLG7GFG97?a9qK<KB797v?
<STG/y^_BCB7SGFG<PBC7PG789:BCGFGONBC<PBCqE@FGONBCB>WqV
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"255•3&H><.<STG]7IG7LpBH>BC>W2597FBC5B—O255•@
Đề tài: 95-07-KHKT-TC
21
$($4‡Š3Š22@2@2"255ˆ‰&:VB/O?//?BVB^-Lc9?]ckr?BC"-&€
kBk:?G :keL?:kOkB9/ •: /WBG7:B?’V9?B Bk9•:`/€ V:9 Š21 ?O?BC
G7V:VG9k:?/9?G/•]:?OV:W:k•k:kBGkGcG`/@
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@T$51458U44I4
1.2.6.1 TCN 68-225:2004: Giao diện kênh thuê riêng cấu trúc số và không
cấu trúc số tốc độ 2048 kbit/s - Yêu cầu kỹ thuật:
?ILG7LpBC>B7Šˆ33‰13‡œ?V^?UB`IB797LI:?IBCG\L9:™G/0H>
`7ZBCG\L9:™G/090G<E3‡ˆ`q?9o/•ILGJL`•97Lh9•<STGrsW^tBC^tV
9:IBGD/i chấp thuận áp dụng nguyên vẹn 9?ILG7LpB$($4‡2ˆ
2@3@2"332&G8V?UB?ILG7LpB?YB97ZBCG7sLL@VW9?ILG7LpBB>W
<STGE7ZBC9?BH>9:LW=B97ZBCeL?<KB7c>cN?ƒL?G7LpBH=C?V^?UB
$($4‡2ˆ1!GGk//VB^k:O?BVc"!&€3‡ˆ`q?9o/^?C?9VcLB/9:LG9L:k^
VB^ /9:LG9L:k^ ckV/k^ c?Bk/ "3‡ˆ VB^ 3‡ˆ(&€ k9•:` B9k:•VGk
:k/kB9V9?B@
Phạm vi và đối tượng áp dụng
Đề tài: 95-07-KHKT-TC
22
?ILG7LpBB>WeLW<KB7GFGWILGJL`•97Lh9H>GFGBCLWIB9nG`?mO9:V<0?Hj?
C?V^?UBONBCG8VGFG`IB797LI:?IBC90G<E3‡ˆ`q?9o/9:i`7FBC23ΩXqV
CPO1
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?ILG7LpBB>WqVCPOGFG<”G9wB7Hh9cuXGD`7wH><?UB"9:˜GFG`7wVGNB7
H=VB9>B<?UBXeLFF]H>9SDBC97wG7<?UB9˜&G8VC?V^?UBONBCX<PBC97v?
<SV:VGFG]7Ž]`?mO9:V97wG77T]<0?Hj?97?a9qKGLBCG\]C?V^?UB@
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`q?9o/@
1.2.6.2 TCN 68-226:2004: Kênh thuê riêng cấu trúc số tốc độ 2048 kbit/s -
Tiêu chuẩn chất lượng
?ILG7LpBC>B7Šˆ33Š13‡œ6IB797LI:?IBCG\L9:™G/090G<E3‡ˆ
`q?9o/•?ILG7LpBG7\9cSTBC•<STGrsW^tBC^tV9:IBGD/ichấp thuận áp
dụng nguyên vẹn 9?ILG7LpB$($4‡252@3@2"332&G8V?UB?IL
G7LpB?YB97ZBCG7sLL@VW9?ILG7LpBB>W<STGE7ZBC9?BH>9:LW=B
97ZBCeL?<KB7c>cN?ƒL?G7LpBH=G7\9cSTBC`IB797LI:?IBC@
$($4‡251¢!GGk//VB^k:O?BVc/"!&€3‡ˆ`q?9o/^?C?9Vc/9:LG9L:k^
ckV/k^c?Bk/"3‡ˆ(&€BBkG9?BG7V:VG9k:?/9?G/
Phạm vi và đối tượng áp dụng
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90G<E3‡ˆ`q?9o/@
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G7\9cSTBC`IB797LI:?IBCG\L9:™G/090G<E3‡ˆ`q?9o/^GFG^VB7BC7?U]
GLBCG\]`IB797LI:?IBCGLBCG\]97kGFGeLW<KB7H=eL~BcuG7\9cSTBCqSL
G7wB7XH?YB97ZBC@
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G\L9:™G/090G<E3‡ˆ`q?9o/@
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97LI:?IBCG\L9:™G/090G<E3‡ˆ`q?9o/9:SjG`7?<SVH>`7V?97FGH>/y^_BC@
1.2.6.3 Qui chuẩn chất lượng kênh thuê riêng SDH
?ILG7LpBG7\9cSTBC`IB797LI:?IBC(<STGrsW^tBC^tV9:IBGFG9?IL
G7LpB$($422Š‡H>`7LWaBBC7K`7FGH><SV:VGFGWILGJLG_97m
G7GFG97VO/0G8V`IB7G\L9:™GHG23XHG3XHG4XHG‡XqVCPO1
Dung sai định thời của Công ten nơ ảo: qVCPOGFGWILGJLG_97mH=
<KB797v?G8V9wB7?UL]7{7T]Hj?GFG9?ILG7LpBH=<PBCqEX<KB797v?
9:BC(B7S@ˆ24X@ˆ3‰7VWB7S9:BCŠˆ2Š‡1255•H>
Šˆ2••1255ˆ€H>H=GB9:‹B7S@•ˆ4
Đề tài: 95-07-KHKT-TC
23
Trễ truyền: GFGWILGJL90?97?mLH=<E9:YcjBB7\9G8V9wB7?UL9:LW=B
9:IB`IB797LI:?IBC<STGrFG<KB79:IBGD/iWILGJLH=G7\9cSTBC^KG7
H_cj]9:IB
Rung pha: GFGWILGJL]7{7T]Hj?GFG9?ILG7LpBH=:LBC]7V9N?GFG
C?V^?UB97kGFGG7LpB@ˆ3‰7VWŠˆ2••1255ˆqVCPOGFGWIL
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:?IBC]7~?90?97?mL<F]RBCWILGJL9?ILG7LpB9N?C?V^?UB9SDBCRBC
Khả năng truyền tải thông tin: WILGJL9:LW=B9~?97ZBC9?B9:BC/L09
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0?Hj?GFG97VO/0eLVBCG8V97?a9qK19LŸ97kO.RBC^_BC97?a9qK
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7”GŠˆ2••&
Đề tài: 95-07-KHKT-TC
24
