687983_a1d9b_aliev_t_i_seti_evm_i_telekommunikacii

123456 2. 78549AB2 A565CDEEF C2

' 85 EF 59AB2E C 2B5 .* 3236 7 78B1B5 C BD B D:

•831AB D9 89DC 83A C2B57 C 3 AB89AC 27 1B5B2 A7 78B5 B 2C C 523 3 B1B 8BD 3 C;

•2B DBD7 AB6C2B57 C;

•B5 3 5B B B DC 7EB 3 D AB C1 78C 7 CC.

254D9A2AC2E C 2B5B 323674C 58 D:

•C A7 3 C 2C 23BE27 B57 CC 23435 C1 78B5 5 C 2B5B 5C6;

•EB833 3 DAC3 D23EB57 C A B8B 3 2B A7 C;

•2BE83 & B C-7 538C43 C 7632 3A.

2.6.3.5 268AC C

2.6.3.1.FC6 CD 5F 26C!2 CC 85 7865 3 !C

33DB6 323674C 67 B D383 B A7 787 C B89 B57 C3 B63 B5 767 D 5 5C63 &5 5 42" , (2 42&) 32CC V.

3B63 6B8 BE3 34C57D9 7FCD 32367573 67 BD B CEBA, 5B CA7 FC 5 A7 787 5 C C 5 7 727D 23 323674C 67, D3 AB D2B8 C AB223A CC B CEBA.

5EE24B9C 519%54 (error correction) – BD6383 C3 B83 B1B C1 787 BD B5 C C 27583 C3 5B CA7 FC 5 2B 3 3 5 C B CEBA.

#8 AB D2B8 C AB223A CC B CEBA 2C 3236743 67 C B89 D & 6 & 6# 0$ , 5 47 D B DC, 2BDBAB8

3D35B1B BE 3 7 MNP (Microcom Network Proto ol), ABDB2 D78 47 D9

9A2 428A2 CD885C D% DC V.42.

3B63 2C 3236743 67 C B89 D 781B2CD 7DC 67, 4DB B5 73D AB2B D9 BE 3 7 C 3 9 73D 523 323674C.

D3A 92 FA88 (data compression) – AB6C2B57 C3 C B2 7 CC 389 3 9 3 C 3 BE9 7.

"2C 3236743 67 B D383 B B A7 78 C B89 D 236 D57 68 2BADE2A 59CD F 2CDBC-829 2CDBC 42.

!D7 672D TAPI (Telephony Application Programming Interface) –

B C 573D 5 7C B63 D5C3 ", D383 B B 8C C3 C B 5B8 3D C D312C2B57D9 5 2C8B 3 C 68 ", BE27F3 C A 8 17 D383 B B 5 C: BD 2B DB1B 7EB27 B 327 6B E8BAC2B5AC 5B AB5, 3237623 7 CC 5 B5B5 C AB 323 5 C.

$7 2C.2.64 3234C 83 B B5 3 A CC B63 B 5 C, B2 8C2B57 3 5 23AB 3 67 C 32CC V.

2.6.3.2. $5 786 7 3426 2F4

3B63 3 D7 672D 32CC V B 3236743 67 B D383 B 8C C B 23638 D (2C.2.65):

1)7 743 C3;

2)DC A7 787 5 C;

3)5C6 B6 8 CC;

4)AB2B D9 323674C.

151

123456 2. 78549AB2 A565CDEEF C2

+! " 45 , #3 (&5 5 42" 5& V)

3B6 8 C C 63 B6 8 C

! 7DC3 67

87FCD7 BD B CEBA

"B6632 A7 D383 B CC:

75DBBD53D4CA, 1B8B B57

B4D7, 7A-8 E7, .+$

2.64

3B63 3 D7 672D

$7 743 C3

C ,!

%C6 B6 8 CC

!AB2B D9

6 83A 7 3236747

B8 6 83A 7

3236747

3236747 7A B5

AB DC2 3

5 6383

47 DBD 7

7 B57

7 8CD 6 7

7 8CD 6 B-7 B57

300 (V.21),

1 200, 2 400,

4 800, 7 200,

9 600, 12 000,

14 400, ...,

28 800, 33 600,

C D.6.

6B 56 AECD/ .

2.65

2.6.3.3. &A233C CE2 C 85 785

$7 2C.2.66 236 D7583 7 A87 C CA7 C B63 B5 B:

•A CB 789 B 7 743 C;

•AB D2 ADC5 B C B8 3 C;

•B BE 323674C 67;

•B BE 2378C 7 CC 2BDBAB8B5.

1. "B '! " 26* ! 23 2(5 . B63 638 D 7:

7) D383 B 3;

E) D383127 3;

5) BDB5 3 (276CB B63);

1) 7A-B63;

6) C2 56 5, 236 7 743 3 68 323674C 67 B A7E389 8C C 5 C, 5 47 D B DC B 3DC A7E389 B1B D3835C63 C B AB2B D9

6B 10 3ECD/

2. "B &! ! 6 5 . B63 B1 D E D9:

•5 3 C3, B6A8 473 3 A7E383 A 27 93 RS-232 32 B 789 B1B AB 9 D327;

•5 D23 C3 – 5 5C63 87D, D7 758C573 B 5 D2C AB 9 D327.

152

123456 2. 78549AB2 A565CDEEF C2

E62 ' 2" # 45

"B A CB 789 B 7 743 C

383 B 3

383127 3

!BDB5 3 (276CB B63)

,7E389 3

07A-B63

"B AB D2 ADC5 B C B8 3 C

67323674C			B BE"B 2378C 7 CC 2BDBAB8B5
						2B127 3
						7 727D 3
B BE			C 2B 3
			7 C 2B 3
"B
	5 3 C3
5 D23 C3
									2.66

3. "B $! 5&542( 42 % (2C C 27EBD 5 8C CC) B638C 638 D 7:

7) 9 8D 5, C B89 FC3 C 2B B BE 323674C 67, 2C ABDB2B A7 6 ECD B 873D 4323 CA C2B57 C D32578 523 3 C C B89 B57 C3 C 2B C 7 CC 2C3 B1B C 32367 F31B D2B D57; C 2B C 7 C BE3 34C573D D3 323674C 2758 F3 C B2 7 CC C C B89 B57 C 5 BEBC D2B D57 D7ADB5 13 327DB2B5; C 2B 23 C 383 BBE27 B 2C 3 D9 2C B217 C 7 CC 5 C B DC "DB4A7-DB4A7" 4323 5 6383 3 A7 78 5 C;

E) 29 8D 5, C B89 FC3 7 C 2B B BE 323674C 67, 2C ABDB2B A7 6 C 5B8 (23 3 8B5B C8C 3EB89 B E8BA) B 873D BD6389 B C 3 6 67 C B1 D E D9 2BC 5B89 3 2B 3 DAC 523 3 C; 68 27 B 757 C B D 7 FC 67 A7 6 32367 &83 3 D B632 CD D72DB5 C DB B5 ECD; &DBD B BE C 53 D3 D7A 3 A7A D72D-DB B57 3236747; B63 27EBD73D 5

7 C 2B B 23 C 3 2C C B89 B57 CC AB DC2 3 A7 78B5 5 C; 4. "B $! &526 32" & 6 AB223A CC B CEBA C 7DC

67 B63 E 57 D:

•7 727D B 2378C 7 C3;

•2B127 B 2378C 7 C3.

2.6.4. 9 5 F2 2 9 98 2E A3 8F6 5" 37+9 A8926 (ISDN- 2 8535E9C)

3B63 7 3236747 AB 9 D32 67 B 7EB 3 D AC 8C C D383 B 3D3 B 5B8 3D 5 C63789 8B5C (7 DC 323674C C 3 D DB89AB C 2B5 3 . ! C 5 3 A7 78 5 C 5 BAB1B A743 D57) 6B DC49 236389 B AB2B DC 5 56 AECD/ , 4DB 5 B 3 6B D7DB4 B 68

153

123456 2. 78549AB2 A565CDEEF C2

323674C 89DC 36C 67, 5 47 D B DC 5C63B, B AB89-CE 69 2C3 83 A743 D5B. #8 BE3 343 C EB833 5 BAC AB2B D3 323674C 67 B .* E 87 27 27EBD7 7 D3 B8B1C, B8 4C5 7 7 57 C3 ISDN.

29 E5 2 2 9 98 2 EA3 8 6 5% 3739 A8926 – 2D*.

(Integrated Services Digital Networks – ISDN) – C 2B57 3D9, B D2B3 7 7 E7 3 D383 B B 3DC 5 C, 5 ABDB2B B1 D 3236757D9 BBEF3 C 27 5C6B5 – 67 3, 7 D7A 3 B C 2B57 3 5C63BC BE27 3 C C 2349.

+E 4 7 D383 B 7 5 9 B2C3 DC2B57 7 7 323674 1B8B 7 C B 5B8 3D B63 7 BE 3 C57D9 67 C B AB2B D9 3 5 3 56 AECD/ . ISDN 27 27EBD7 7 3 C789 B 68 DB1B, 4DBE BEB DC B127 C43 C3 B AB2B DC 323674C 67, B B 27 CD9 B5 3 DC B D9 F3 D5 FC C D383 B C 3D C.

!3D9 ISDN B5 3 DC 7 "532 5 C" D383 B C 3D C: B B B 5B CD9 BE 4 B1B D383 B 7 7 B 32 ISDN C 5 BE27D B 7 27583 CC 5 23 C 3 "1B8B B57 5 9", 7 3236747 67 B AB2B D9 64 AECD/ C 5 3 5B B 7 DB89AB 3 6 65 D32 C 787 C ISDN.

! F3 D53 7 B BE3 B D9 ISDN – &DB 685 54A8A3 85, D.3. 5B B B D9 3236757D9 67 3 C 2349 B6 B523 3 B. "B AB89A 5 C D32 3 3 ISDN 236 BD23 8 3E A7 78, 23 C 323674C B 3D E D9 C 3 3 E3 27 2 57 B36C 3 C.

ISDN B 275 3 C BE 4 B B63 B 5 9 BE3 34C573D:

•EB833 5 BA AB2B D9 323674C 67;

•EB833 5 BA 763 B D9;

•2C C C789 B C B3 A743 D5B 5 7C B63 D5C 3 6 7EB 3 D7 C.

-&5 !/5 2 3D3 ISDN:

1)9DC82 5 5 B85E5 F9A2 DB65 9D54 5 7 43D C B89 B57 C 5 6383 B1B A7 787 C1 78C 7 CC C 323674C B 3 C1 78B5 27583 C C 5 7C B63 D5C (7 DC3 8C CC, 7EB2 B 327, BD53D, 27 936C 3 C3 C D.6.) 5 C 2B5B 5C63;

2)F B58926 D9A 9 D6 3DB2 6 – 5B B B D9 B F3 D58 D9 B B6 C C D3 3 8C C A7A D383 B 3 3231B5B2, D7A C 323674 67;

3)9D 8 !5 5 96F! – 5B B B D9 B217 C 7 CC D383D3A D7, D383A 7 C8C D383 7A 7 BBD53D D5 FC D2B D5B 5 8 EB DB4A3 3 B1B 727.

ISDN B6 B523 3 B 236B D758 3D 27 8C4 3 5C6 5 C:

• D383 B;

• B63;

• B 5 6383 B A7 78 5 C.

ISDN 383 BBE27 B 2C 3 D9 5 D3 8 47, AB167 3BE B6C B

58 D4 59C (B 3 B DB B) 3236757D9 9854 5 D6 % 5 D 05E 42 7 6$5 8299AD B 9DCD 9CD8D9A$ C 245! D9A$.

'378C 7 C ISDN B F3 D58 3D 5 BBD53D D5CC 23AB 3 67 C C

ITU-T 32CC I.

154

123456 2. 78549AB2 A565CDEEF C2

C$5 5 $&!4 2 5 5&'5, ISDN BA7 7 7 2C.2.67, 163:

41 – D32 C 789 B3 BEB2 6B57 C3 ISDN;

42 – 3 B5 3 DC B3 ISDN D32 C 789 B3 BEB2 6B57 C3;

. –	D32 C 789 767 D32;
NT1 –	3D35B3 BAB 47 C3 2B5 1 (B6747 CD7 C A 7EB 3 D AB
D7 B5A3,	BE3 343 C3 + 8C CC C AB D2B8 27EB4C 727AD32C DCA,

C 2B C 7 C, 89DC 83A C2B57 C3 7 1- (C C43 AB) 2B5 3, 27 23 3 C3 AB 8CADB5 6B D 7); 236 D758 3D BEB BE 4 B 7 D3 AB2BEA;

NT2 – 3D35B3 BAB 47 C3 2B5 2 (A CC 2-1B C 3-1B 2B5 3: 89DC 83A C2B57 C3, AB D7 C C AB 3 D27 C, 7 D7A 3 A CC + C 3ABDB2 3 A CC 1-1B 2B5); 5 A743 D53 A CB 789 B1B E8BA7 NT2 B1 D 5 D 7D9 /. !, 8BA789 7 3D9 C8C D32 C 789 767 D32;

(A CC NT1 C NT2 B1 D BE936C D9 5 36C B C C43 AB BEB2 6B57 CC, BEB 7473 B 2B DB NT);

LT – 8C 3 B3 BAB 47 C3;

4– D7 CB B3 BAB 47 C3.

R, S, T, U, V – C D32 3 ISDN, 5 47 D B DC R-C D32 3 5 573D 3 B5 3 DC B3 ISDN BEB2 6B57 C3 T42 ..

42	.
	R
	41

41

NT

42	T
	.
R	S

(C 2B57 2- 2B5B6 7 .*

ISDN 192 AECD/

NT

LT

E

U

V

.

2.67

%BD8C4C3 BD D276C CB D383 B 3D3 2758 F7 C B2 7 C 32367 D B 3 C789 A7 787, 3 712 7 A7 78 323674C 67.

%ISDN 27 8C47 D 657 DC 7 A7 787:

•4A8A3 B – 68 323674C 1B8B 7 C 67 2B A B B BE B D9 64 AECD/ ;

•4A8A3 D – 8 3E (C1 789) A7 78 323674C 2758 F3 C B2 7 CC. +6C A7 78 DC 7 D BE 8 C573D 2 C8C 30 B-A7 78B5 C BE3 34C573D 5B B B D9 E D2B 13 327 CC C E2B 7 5 B5B5, 7 D7A 3 323674 C B2 7 CC B B D 7 FC 5 B57, 5 DB 4C 83 B B 323

BE27F7 F31B A 3DC 7EB 3 D7.

!D7 672D B 23638 D 3 5&'5, 2 4 ! 2 ISDN (DC 7 ISDN): 1) E7 B5 – BRI;

155

123456 2. 78549AB2 A565CDEEF C2

2)325C4 – PRI;

3)C2BAB B8B – B-ISDN.

*8 2E 2 BRI (Basic Rate Interface) – D7 672D (E7 B5)

C D32 3, BEB 7473 A7A (2B+D). )DB B 7473D, 4DB 68 323674C 67 C B89 3D 2 A7 787 B B AB2B D9 323674C 64 AECD/ B A7 6B A7 78 C 1 8 3E (C1 789) A7 78 D B AB2B D9 323674C 16 AECD/ . 7AC BE27 B, 2B A 7 B BE B D9 C D32 3 7

BRI 275 7: 2*64 AECD/ +1*16 AECD/ = 144 AECD/ .

BRI 236 7 743 68 B6A8 43 C D383 B B 7 727D 2 (D383 B B5, 7A B5, 75DBBD53D4CAB5 C D. .) C AB 9 D32B5 A ISDN.

*8 2E 2 PRI (Primary Rate Interface) BE936C 3D 3 AB89AB BRI C B36C 3D 8B. % 75C C B DC BD AB A23D 3 D D7 672DB5 B 5A8 473D 5 3E 23 B-A7 787 (!6. C ; B C) C8C 30 B-A7 78B5 (452B 7), B6632 C57 C D312789 3 AB2B DC 323674C 67 1,544 3ECD/ C 2,048 3ECD/ BBD53D D53 B.

B-ISDN (Broadband ISDN) BE3 34C573D 5 BAC3 AB2B DC 323674C (155 3ECD/ C 622 3ECD/ ), 4DB B 5B8 3D 2378C B57D9 323674 5C63B67.

2.6.5. 12 8535E99 xDSL

xDSL (Digital Subscriber Line) – 2 8535 99 323674C C 2B5 67 D A565 D E C2 262E 5 C, BE3 34C57 FC3 1B27 6B EB833 5 BAC3 AB2B DC 323674C B BE 4 36 2B5B67, 43 D276C CB 7 B63 7 5 9 C ISDN. % BAC3 AB2B DC 6B DC17 D 7 43D C B89 B57 C 2 67 D3 C43 AC 23 3 C, 5 47 D B DC & 3ADC5 8C 3 AB6B5 C 767 DC5 3DB6B5 AB223A CC C A7 3 C 7 8C CC.

xDSL BE936C 3D 27 8C4 3 D3 B8B1CC (2C.2.68), ABDB2 5 7EE235C7D 23 xDSL BBD53D D5 D 27 3 743 C C 5B87 « ». )DC D3 B8B1CC 27 8C47 D 5 B B5 B B C B89 3 B B BE B6 8 CC C AB2B DC 323674C 67.

3 B8B1CC xDSL

SDSL

RADSL

(Single-line DSL)

(Rate-Adaptive DSL)

HDSL

ADSL

VDSL

(High-data-rate DSL)

(Asymmetrical DSL)

(Very-high-data-rate DSL)

!=2,048 3ECD/

71= 6B

3,5 3ECD/

7 = 6B 52 3ECD/

72=6B

24 3ECD/

2.68

HDSL (High-data-rate DSL) – 5 BAB AB2B D 7 C 2B57 7EB 3 D A7 8C C, BE3 34C57 F7 C 3D2C4 6 83A 323674

156

123456 2. 78549AB2 A565CDEEF C2

67 B 65 D383 B 727 B AB2B D C 6B 2,048 3ECD/ 5 A7 6B 7 27583 CC 7 27 DB C3 6B 4,5 A.

SDSL (Symmetrical DSL) – B6 B 72 7 532 C HDSL,

BE3 34C57 F7 C 3D2C4 6 83A 323674 C 2B5B1B BDBA7 B AB2B D9 2048 AECD/ B B6 B 723 D383 B B1B A7E38.

ADSL (Asymmetrical DSL) – 7 C 3D2C4 7 C 2B57 7EB 3 D A7 8C C, B 5B8 F7 B B6 B 723 D383 B B1B A7E38 3236757D9 67 3 BD B89 B57D38 5 3D9 7 AB2B D BD 16 AECD/ 6B 3,5 3ECD/ C 5 BE27D B 7 27583 CC C 3DC A B89 B57D38 B AB2B D C 6B 24 3ECD/ 7 7A C 789 B3 27 DB C3 6B 5,5 A.

RADSL (Rate-Adaptive ADSL) – ADSL 767 DC2 3 B AB2B D9,

4CD 57 F3 727AD32C DCAC AB A23D B 8C CC (68C 7, BBD B 3 C3 C1 78- C D. .), 7 43D 431B 6B DC173D 7A C 789 7 2B A 7 B BE B D9 5 23789 8B5C.

VDSL (Very-high-data-rate DSL) – 532 5 BAB AB2B D 7 C 2B57 7EB 3 D A7 8C C, C 3 F7 B 275 3 C ADSL 74CD389 B EB833 5 BAC3 AB2B DC 323674C 67: 6B 56 3ECD/ 5 7 27583 CC BD 3DC A B89 B57D38 C 6B 11 3ECD/ BD B89 B57D38 A 3DC 2C 27EBD3 5 7 C 3D2C4 B 23 C 3 C 2C 27EBD3 5 C 3D2C4 B 23 C 3 – 2C 32 B 26 3ECD/ 5 A7 6B 7 27583 CC 2C 7A C 789 B 27 DB CC 6B 1,3 A.

$7CEB833 27 2B D27 B D3 B8B1C3 58 3D ADSL, B B5 3 2C C B217 C 7 CC ABDB2B 27 7D2C57 D C 3.

/538C43 C3 AB2B DC 323674C 67 5 ADSL BE 8B583 B 236B D7583 C3 B89 B57D38 EB89 3 B8B 2B A7 C 7EB 3 D AB 8C CC, 43 2C D276C CB B D383 B B 5 C: 1 37 5 3 DB 3100 7. )DB 6B DC173D 7 4 D C A8 43 C 7 DC 323674C 67 C89D2B5, B127 C4C57 FC B8B D383 B B1B A7 787 5 C D325783 BD 300 7 6B

3400 7.

% 236387 B8B 5 1 37 B2 C2 3D 3 47 DBD 6C7 7 B 7 68 323674C D2 BDBAB5 67 (2C.2.69):

•D383 B (1B8B B5) 5 6C7 7 B 3 47 DBD BD 300 7 6B 4 A7;

•AB 9 D32 BD B89 B57D38 5 3D9 5 6C7 7 B 3 47 DBD BD 4 A7 6B 200 A7;

•BD 3DC A B89 B57D38 5 6C7 7 B 3 47 DBD BD 200 A7 6B 1 37.

A
		f
4 A7	200 A7	1 37
		2.69

157

123456 2. 78549AB2 A565CDEEF C2

7AC BE27 B, 68 323674C C 2B5 67 B2 C2 D 657 2 5 & ( % 47 DBD A7 78B5:

•5 BAB AB2B D B (6B 24 3ECD/ ) C B6 FC A7 78 323674C 67 C 3DC 5 AB 9 D32 B89 B57D38;

•C AB AB2B D B (BD 16 AECD/ 6B 3,5 3ECD/ ) 5B B6 FC A7 78 323674C 67 C AB 9 D327 5 3D9.

23DC A7 78 236 7 743 68 323674C D383 B 27 1B5B2B5.

. C 3D2C4 B D9 A7 78B5 68 323674C AB 9 D32 67 BE 8B583 7 D3, 4DB D276C CB B BE9 32367573 67 BD B89 B57D38 5 3D9 1B27 6B 3 9 3 BE9 7 67, 32367573 5 BE27D B 7 27583 CC. +D 3DC, 4DB 2C 3BE B6C B DC B B C 3 D9 127 C 47 DBD 6C7 7 B B5 68 32327 236383 C AB2B D3 323674C 67 5 C B6 F3 C 5B B6 F3 A7 787.

$7 2C.2.70 236 D7583 7 3 7 B217 C 7 CC ADSL.

2				,	+"
	'1	'2
3	3	1	31	DSLAM	3	5 D32 3D
		...	…
		N	3N			2.70

+EB2 6B57 C3 B89 B57D38 (D383 B C AB 9 D32 7 3 3) B6A8 473D A DB4A3 6B D 7 – 829 85456 A56$ '1, 5 638 F3 B 23638 B8B 47 DBD 68 323674C 1B8B B5 C1 78B5 BD 7 78B1B5B1B D383 B 7 C 67 BD AB 9 D327. ,B 9 D32 B6A8 473D A 27 23638CD38 4323 .DSL-B63 (3), B F3 D58 F31B B6 8 C, DB 3 D9 23BE27 B57 C3 C1 787 C C 2B5B1B 5C67 5 7 78B1B5. $7 62 1B AB 3 A 27 23638CD38 '2, BD638 F3 BDBAC AB 9 D32 67 BD 1B8B B5 C1 78B5, B6A8 43 A565 D CDEEFA2AD8 ( ,), BE3 34C57 FC 6B D 5 D383 B 3D9 BEF31B B89 B57 C

( +"), C EF6 A 65C9D8 4D9AF 2 C 8DBD 2 D 5 A9CD 6

(DSLAM – DSL Access Multiplexer), ABDB2 23BE27 3D C1 78 C 7 78B1B5B1B 5C67 5 C 2B5B 5C6 (63 B6 8 C) C 7 2758 3D 31B A 72 2 DC 7DB2, BE3 34C57 F3 6B D 5 5 D32 3D. ,B8C43 D5B N

.DSL-B63 B5 31,…, 3N, 5 B6 FC 5 B D75 DSLAM, B 23638 3D AB8C43 D5B B89 B57D383, ABDB2 3 B1 D E D9 B6A8 43 A DSLAM.

% BAC3 AB2B DC 323674C 67 C 275 CD389 B 35 BA7 DBC B D9 7EB 3 D AB 87D 68 B89 B57D383 6387 D D3 B8B1CC xDSL 7CEB833 32 3ADC5 C 68 B217 C 7 CC 6B D 7 5 5 D32 3D, B8 B D9 5 D3 FC C D276C CB B63 5 9 C ISDN.

158

123456 2. 78549AB2 A565CDEEF C2

2.6.6. 5"93 8AC 232 588AC C

3BEC89 7 D383 B 7 5 9 BD B CD A 236 D57 E3 2B5B6 B 5 C C B 3D E D9 65 DC B5:

•6B 7 C3 824 DA565 D;

•BEC89 3 9DADB 5 A565 D.

124 565' BE3 34C57 D B127 C43 BEC89 B D9 5 236387 B6 B1B C8C 3 AB89AC 2 6B 27 B8B 3 B 3F3 C C B DB D C E7 B5B D7 CC C B6 B C8C 3 AB89AC 323 B D2 EBA.

8 74CD389 B ED89, 27ADC43 AC 3B127 C43, BEC89 B D9 BE3 34C573D $6* 2# 2# #3*, ABDB27 5 7 DB F33 523

B 5B8 3D 3236757D9, A2B 3 1B8B 7, C 2B5 3 67 3 C 67 3 5C63B.

2.6.6.1. FC6 CD 5F 26C!2 CC 3545 5 3 !C

+ B5 B 2C C BDB5B 5 C 7A8 473D 5 27 6383 CC 5 3 B B 57D7 D383 B B 5 9 7 43 AC, 7 573 3 BD7 C. % 3 D23 A7 6B BD 7 B6CD E7 B57 D7 C (-!), B6632 C57 F7 5 9 BEC89 C 7EB 3 D7 C (BDB5 C D383 B 7 C), 7 B6 FC C 5 B 3 3 B 57D7. -7 B5 3 D7 CC BE 4 B 27 B8717 D 7 A2 7 67 C C 3 C789 5 A7. $7 C63789 B (2B5 B C E3 7 D2B AC) B532 B DC B 7 BA2 DC B6 B -! 236 D758 3D BEB A2 1 (2C.2.71,7), 6C7 3D2 ABDB2B1B 3 235 73D 10-20 A. !BD 47 DC4 B 323A2 57 D C 5 3 D3 BE27 D 3D9 (2C.2.71,E), ABDB27 68 2B DBD BE 4 B C BE27 73D 5 5C63 B 3 D57 3 DC 1B89 BD (2C.2.71,5).

1 7)

E)

5)

1
-!
1
1
								2.71
,7 67 BD7 27EBD73D 7 5BC 47 DBD7, 3 323 3A7 FC
B 36 C C (2C.2.72). % 3 BD B6 B1B 27 327 C BE936C 3 5 12 B
7 BD. ,7 67 C E A5 (A, B, C, D, E, F, G) BBD53D D5 3D B 23638 B
6C7 7 B 47 DBD, C B89 3 B 5 236387 B6 B BD. !BD
B6C 7AB5 C	6C7 7 B 7 C		47 DBD
27 6383 BD7 C, 27EBD7 FC C 7 62 1C					F	.		.
47 DBD7. $3EB89 C3 27 32 BD BE3 3-						B
						G	F	B
4C57 D 2 6 23C F3 D5 B 275 3 C					E
						C	E	G
D276C CB B	7 3 B	E3 2B5B6 B			.	D		C
				F	B	.		D
5 9, 7 C 3 B:							B
					G	F
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-7 B57 D7 C, 5 BEF3 8 473, B632 CD 2C B 32367D4CA (""), B6632 C57 FC 5 9 BEC89 C D383 B 7 C, C AB 9 D32, 2378C FC 2BDBAB8 E3 2B5B6 B BEC89 B 5 C (2C.2.74).

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	% 3EB89 C 3D 5 3 E7 B5 3 D7 CC B36C 3 AB D7DB2B
MSC (Mobile Switching Center –							BEC89 AB D7 CB 3 D2) C
C 3 D 5 B6 5 D383 B 3D9 BEF31B B89 B57 C ( +"),
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D383 B B5 B D7 CB 72 C (2C.2.75).									-!	-!
% EB89 C			3D AB D7DB2					1-1B
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C B 873D D7 CC 5B CA789 C63 DC CA7 CB AB6.											383 B C
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