A method and system for configurable and scalable line interface card protection or redundance useful for a range of low speed digital to high speed digital and optical signal types such as STS-1, STS-3, VT1.5, DS-1/T1, DS-3/T3, ATM, ADSL, HDSL, OC-1, OC-3, OC-12, OC-48, OC-192, OC-768, STM-1, STM-4,...http://www.google.com.au/patents/US6636478?utm_source=gb-gplus-sharePatent US6636478 - Configurable scalable communications equipment protection method system
