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鎮ㄥソ锛屾杩庝締鍒扮董搴浕瀛愬競鍫寸恫(w菐ng) 鐧婚寗 | 鍏嶈不(f猫i)娉ㄥ唺

鏁�(sh霉)鎿�(j霉)瑾ょ⒓娓│鍎�
闁辫畝锛�4840鏅�(sh铆)闁擄細2011-01-24 09:16:59

銆�銆�鏁�(sh霉)鎿�(j霉)瑾ょ⒓娓│鍎�鏄竴娆剧湡褰╁睆銆佸湒褰㈠寲銆佸叏涓枃鎿嶄綔鐣岄潰鐨勬墜鎸佸紡E1/鏁�(sh霉)鎿�(j霉)瑾ょ⒓娓│鍎�琛�銆傜敤浜嶦1/G.703绶氳矾鐨勭従(xi脿n)鍫寸董璀�(h霉)鍜屽垎鏋�锛屼互鍙�鏁�(sh霉)鎿�(j霉)绶�璺�(V.35锛孷.24/RS232,RS449,RS530,X.21)鐨勮纰兼脯瑭�銆侶CT-BERT/C鍔熻兘鍏ㄩ潰,鎿嶄綔鏂逛究,鏃㈠彲鎸夌収G.821,G.826,M.2100绛夊湅闅涙(bi膩o)婧�(zh菙n)閫�(j矛n)琛屾脯瑭︾祼(ji茅)鏋滅殑鍒嗘瀽銆侀’绀�,閭勫彲鏍规摎(j霉)鐢ㄦ埗鐨勮姹傚皪娓│鏁�(sh霉)鎿�(j霉)閫�(j矛n)琛屽瓨鍎�(ch菙)銆佺当(t菕ng)瑷�(j矛)銆佸垎鏋�锛屾槸绶氳矾璩�(zh矛)閲忔脯閲忕殑鐞嗘兂宸ュ叿銆�

鐗归粸(di菐n)

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銆�銆�鈼忓绋鍨婨1宸尟(cu貌)鍒嗘瀽锛屽寘鎷珽1骞�銆佸湒妗�銆丆RC銆佸拰BPV鍒嗘瀽

銆�銆�鈼忚纰兼�ц兘鍒嗘瀽锛圙.821锛孏.826锛孧.2100锛�

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銆�銆�鈼忛洟绶氬垎鏋怋ERT鎬ц兘

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甯哥敤娓│鏂规硶

銆�銆�G.703 E1 鍙ERT 娓│

BERT 纰煎瀷

63,127,511,2047,223鈥�1 锛� QRSS 绛夊绋⒓鍨嬪強鐢ㄦ埗绶ㄧ▼

BERT 椤ず鏍煎紡

ITU G.821,ITU G.826,ITU-M.2100

BERT 鐧�(f膩)閫佸樊閷�(cu貌)鐜�

寮�(qi谩ng)鍔犲柈涓�宸尟(cu貌)锛屽挤(qi谩ng)鍔� 10-3 鍒� 10-7宸尟(cu貌)鐜�

鎬ц兘鍒嗘瀽

Logic,Frame,CRC,BPV,E-bit 宸尟(cu貌)锛屾帴鏀惰▓(j矛)鏁�(sh霉)锛岃纰肩锛岀劇瑾ょ⒓绉�锛岃纰肩巼

E1 鍒嗘瀽鏂瑰紡

淇￠亾鍦栫ず锛� Sa 姣旂壒锛屼俊浠� ABCD 姣旂壒绛�

E1 鍙ｈ(gu墨)鏍�

鏀剁櫦(f膩)閫熺巼

2048K bit/s卤3ppm.@25鈩�

绶氳矾绶ㄧ⒓

HDB3

鑴堟矕鐗规��

绗﹀悎 ITU-T G.703

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鍏�(n猫i)鏅�(sh铆)閻橈紝澶栨檪(sh铆)閻�锛屾仮寰�(f霉)鏅�(sh铆)閻橈紝鏁�(sh霉)鎿�(j霉)鍙ｆ檪(sh铆)閻�

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涓嶆垚骞�锛屾垚骞�锛� FAS,FAS+CAS; 甯� CRC, 涓嶅付 CRC


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DTE 鎴� DCE 鍚屾瑾ょ⒓娓│

DTE 鎴� DCE 浣庨�熷悓姝� / 鐣版瑾ょ⒓娓│

鎺ャ��鍙�

V.35,V.24/RS232,RS449,RS530,X.21

V.24/RS232,V.35,RS449,RS530,X.21

閫熴��鐜�

N脳64K(64K鈥�2048K)

鐣版锛� 50 鈥� 115.2K bps
鍚屾锛� 150 鈥� 72K bps

BERT 纰煎瀷

63,127, 29 -1 (511),2 11-1 (2047),215-1 ITU 妯�(bi膩o)婧�(zh菙n)绛�

63,511,2047,FOX,SPACE,MARK,and ALT

鍩烘湰鎳�(y墨ng)鐢�

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銆�銆�骞�鑸囬潪鎴愬箑鐨勭鍒扮娓│

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銆�銆�鏁�(sh霉)鎿�(j霉)绶氳矾瑾ょ⒓娓│

銆�銆�DTE/DCE n脳64k 鍚屾娓│

銆�銆�DTE/DCE 浣庨�熺巼锛屽悓姝� / 鐣版娓│

缍韩闆诲瓙閫�锛岄浕瀛愮煡璀�(sh铆)锛屼竴鏌ョ櫨閫�锛�

宸叉敹閷勮姊�168666鍊�(g猫)