| 摘要 |
An multiservice access device (MAD) for Ethernet and DS1/DS3 services is provided for public communications carriers (telcos), for example, and has a reduced form factor (e.g., Type 400 NCTE mechanics or small enclosure), at least two 2.5 Gb/1 Gb facility side ports, at least four full rate GigE drops, complementary RJ48C demarcation and stub-ended DS1 cable options, integral T1 NIUs for in-band loopback, NPRM, SPRM, AIS/AIS-CI and RAI/RAI-CI diagnostics, lightning protection, and protection switching. The MAD has built-in SynchE and IEEE 1588 synchronization, and Stratum 3 and incoming DS1/DS3 synchronization capabilities.
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