The NM-8T1-IMA is an ATM network module with Inverse Multiplexing over ATM (IMA) that allows service providers and enterprise customers to cost-effectively increase bandwidth, extending multiservice capabilities to remote-branch-office locations through ATM.The multiport T1 IMA module enables service providers to deliver critical integrated ATM services combining data, voice and video with ATM's guaranteed QoS features. With multiport IMA deployed as CPE edge, network service providers can deliver unmatched flexibility in the types of services they can offer to their customers. Multiport T1 IMA can provide organizations with highly desired fractional T3 bandwidth connectivity, which is critical in situations where DS3 or OC-3 fiber connections are either cost-prohibitive, or unavailable between a provider's central office and the customer's premises.Multiport functionality allows access to ATM WAN uplinks with bandwidth requirements between DS1 and DS3 rates. The module supports the ATM Forum Adaptation Layer 5 (AAL5) with ATM QoS categories Unspecified Bit Rate (UBR), Variable Bit Rate (VBR-rt and VBR-nrt), and Available Bit Rate (ABR). VoIP and H.323 video over ATM can be supported using VBR-rt class of service (CoS) parameters with the currently available analog voice/fax network modules with voice interface cards (VICs), or the new T1 digital packet voice trunk network modules with multiflex trunk cards.The multiport T1IMA module's support for VoIP and H.323 video applications provides low latency, jitter-free voice support to enhance throughput, and high-quality, end-to-end voice and video performance. When combined with high-density packet telephony solutions already available on the Cisco 2600 and 3600 series, the multiport ATM network module provides a seamless end-to-end multiservice solution, interoperable with other ATM Forum IMA version 1.0 products available from Cisco.