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STM-1/STS-3 Dual Bus Ethernet Mapper of 4-port with LCAS
VLM155S (GC68561B-LG)
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The VLM155S is designed for SONET/SDH add/drop multiplexer, multi-service access platform for unidirectional single/dual ring applications.
Ethernet payload can be mapped/demapped into/from SONET/SDH. Virtual Concatenation Group via the RMII port. SONET/SDH Low Order or High Order VC Virtual Concatenation SPE are supported, Virtual Concatenation SPE formats support up to VC3-3v/ VC12-63v/ VC11-64v.External RAM interface is also provided to compensate transmission delays for different VCG members.
VLM155S can compensate the maximum transmission delay up to ±250ms by 128Mb ofexternal SDRAM. |
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Support single RMII Port, the RMII port can be configure to support 10/100M operation. |
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Support Ethernet Frame (RMII) Encapsulation/De-capsulation Protocol of
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ITU-T G.7401, Generic Framing Procedure (GFP) |
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ITU-T X.86 Link Access Procedure SDH (LAPS) |
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Virtual Concatenation Group can support up to VC3-3v or VC12-63v or VC11-64v |
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External RAM Interface is provided to compensate Transmission Delay of different Virtual Concatenation Group Members. Up to ±250ms Differential Transmission Delay can be compensated using 128 Mb SDRAM. |
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Low latency (e.g. less than 150us for the Ethernet frame of 64 bytes) supports excellent performance for Ethernet switching applications. |
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Support ITU-T G.7042 LCAS to provide hitless operation of dynamic bandwidth management. |
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Multi-Service Ethernet Switch |
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Multi-Service Access Platform |
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SONET/SDH Add-Drop Multiplexer |
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IP DSLAM |
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