Tellabs 1000 MSAP Services The Tellabs 1000 supports copper and optical technologies, including Ethernet, SONETSDH, ATM and IMA. The system is extremely scalable and supports from one to more than 2, 000 subscribers. The system also supports traditional POTS and other legacy services, such as ISDN, FAX, DIDDOD, 2-Wire4-Wire, Pay Phone, E&M, TO and EBS along with industry-standard VDSL2 and ADSL2+ (bonded and unbonded) and POTS subscribers. In addition, the Tellabs 1000 provides Ethernet transport and Ethernet services delivery with the Gigabit Ethernet Transceiver and Ethernet Service 10100 (ES 10100) plug-in cards. This means that service providers can offer bonded DSL, wireless traffic backhaul and business premises services delivery across an Ethernet BBDLC without sacrificing carrier-class reliability and redundancy.