好消息：为了走量 厂家特价促销 adsl2+ ip dslam 局端设备。
品牌：台湾正华（c-com）
优势：
价格：走量，市场最低价；
质量：过硬的技术和质量，进入大陆销售5年以来，近万线的量，没有一台返修，0返修。
本公司是台湾正华通讯股份有限公司上海办事处
     正华通讯股份有限公司（http://www.c-com.com.tw）成立于1988年，公司总部位于台湾新竹科学园区，是一家专业通讯接入设备设计制造厂商，及系统整合方案提供者。公司专注于xdsl/ipdslam产品局端和用户端的研发与生产。
自1991年起，正华通讯即领先同业进入hdsl和msdsl及g.shdsl产品开发并经过多年全心投入，在对称dsl产品领域已建立领导品牌地位与实力。自2000年推出的adsl、adsl2+、ipdslam也获得巨大成功。客户遍布中国、美洲、欧洲、中东与亚洲等。g.shdsl，msdsl，ipdslam，adsl等产品以优秀的品质和完美的服务也在大陆市场获得巨大发展，成为大陆宽带接入市场的主要供应商之一。
dslam介绍：
图片：
 
 
ipam-4800/4824                                                                                   详细资料（pdf格式）
ipam-4800/4824 ip dslam has 48/24 ports subscriber line interface with pots splitter built-in achieved 1u height space saving design. ipam-4800 came with unique bandwidth management, flow prioritization and data flow security control key feature. ipam-4800 provided qos (quality of service) capability to meet triple play (voice, data, video) requirement, support adsl/adsl2/adsl2+ interface, stackable up to 8 ipam-4800 can be cascaded. no matters in features, performance, and cost wise, ipam-4800 is the best choice for nsp (network service provider).
key features and benefits :
◎excellent management
snmp-based gui ems
local rs-232 cli, and ethernet snmp/telnet management
remote in-band snmp/telnet management
firmware upgradeable via ftp or tftp
◎advanced functions
support 48*128 mac address & 256 multicast mac address
support static vlan and port-based vlan
firewall security by vlan filtering, mac filtering, ip filtering, access control list by mac and ip address
traffic prioritization (802.1p)
uplink aggregation (802.3ad)
support 802.1x, dhcp relay option 82, pppoa to pppoe conversion, etc
  
application scenario : 
copyrightc 2005 c-com corporation all rights reserved. reproduction in whole or in part without permission is prohibited. 

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