(Shanghai Bell Alcatel 1643AM is a compact multi-service access multiplexer, which helps to extend the network to the edge, according to the existing SDH network, provides cost-effective multi-service access through STM-4 optical interface, Especially suitable for small and medium customers, it can effectively provide various enterprise network services, campus network LAN interconnection, and virtual private network services. 1643AM transmits data and voice at the same time according to SDH equipment, no need
Shanghai Bell Alcatel 1643AM Multiservice Access Multiplexer.pdf)
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