品牌 ctc 型号 ERM-MUX/PLUS
当 前 价： 6050.00元/台 最小起订： 1台 供货总量： 10台
发 货 期： 10 天内发货 所 在 地： 中国 上海 上海市 有效期至： 2008年04月01日 查看类似产品 类目：光纤波分复用器 所在地：中国上海 价格： 6050.00元/台 品牌：ctc 型号：ERM-MUX/PLUS
CPU redundancy (1+1) ? E1 redundancy (2+2) ? Power redundancy (1+1) [AC+AC, DC+DC, AC+DC] ? DCE plug-in card types* 6-channel magneto card* 6-channel 2W/4W E&M card* 6-channel FXS card* 6-channel FXO card* 6-channel RS-232 card (low speed)* 5-channel X.50 card* 4-channel G.703/64K-CO card* 4-channel V.35 card (n*64K) ? Drop & Insert function ? NMP, SNMP and Web based management ? EMS system supported ? Compliance with ITU-G.703, G.704, G.706, G.732, and G.823. Specifications G.703 E1 I/O Specifications Framing: Unframed / Framed; CCS(PCM31) / CAS(PCM30); CRC4 On/Off Bit rate 2.048Mbps±50 ppm Line code AMI / HDB3 Line impedance 75 ohm, unbalanced (BNC) 120 ohm, balanced (RJ-45) Relative receive leve l 0 / -43dB Transmit level Pulse amplitude Nominal 2.37V ±10% for 75ohm Nominal 3.00V ±10% for 120ohm Zero amplitude: ±0.1V Transmit frequency tracking Internal timing±30 ppm Loopback timing±50 ppm External timing±100 ppm Jitter performance According to ITU-T G.823 Complies with ITU-T G.703, G.704, G.706 and G.732. Interface connectors BNC for unbalanced; RJ-45 Connector for balanced Ethernet I/O Specifications ? Bridge module - 2 channels ? 10BASE-T/100BASE-TX, Full Duplex or Half Duplex ? 10BASE-T/100BASE-TX, Full Duplex or Half Duplex ? IEEE 802.3x flow control ? Real-time filtering with 256 address tables ? Automatic address learning, aging and deletion after 5 minutes ? Up to 340 packet-buffering capacity ? Forwarding and filtering rate at wire speed with through put latency of 1 frame. ? Auto padding of undersized packets to meet the minimum Ethernet packet size requirement ? Buffering modes can be selected according to the setting of WAN and LAN line speeds ? Ethernet interface has automatic Twisted Pair polarity correction LAN Standard Fully compliant with IEEE 802.3/802.3u Connector Shielded RJ-45 Speeds 10BASE-T/100BASE-TX, Full or Half Duplex Frames Supports 64 to 1522 byte packet lengths, standard and extended length frames for VLAN tagging, etc. Sub-E1 I/O Specifications ? Each card provides two E1 loops, each loop provides E1A/E1B channel independently ? Hot-Swappable ? Each first E1 loop may provide external clock to be used as system clock source Framing Framed CCS(PCM31) / CAS(PCM30) CRC check CRC4 On/Off Bit rate 2.048Mbps ±50 ppm Line code AMI / HDB3 Line impedance 75 ohm, unbalanced / 120 ohm, balanced Relative receive level 0 / -43dB Transmit level Pulse amplitude Nominal 2.37V ±10% for 75ohm Nominal 3.00V ±10% for 120ohm Zero amplitude ±0.1V Jitter performance According to ITU-T G.823 Complies with ITU-T G.703, G.704, G.706 and G.732 Interface connectors BNC for unbalanced RJ-45 Connector for balanced Loopback type Remote digital loopback Other Datacom I/O Specifications N x 64 Module, 4 channels, High Speed Data Interfaces) Interfaces types RS-530, X.21, V.35, RS-449 and RS-232 Interface connector HD68 Female with appropriate cable adapter. Line code NRZ Data rate N x 64kbps, where N equal 1 to 31 in CCS and N equal 1 to 30 in CAS Async Module, 6 channels, <= 38.4kbps Async or 6 channels, 64/128kbps Sync
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