||7.28 x 6.75 x 0.80 in.
The combination of channelized and clear channel T3 functions makes the Cisco 2- and 4-Port Channelized T3 SPAs ideal for today's rapidly changing WAN environment. As an integral part of a service node where customer bandwidth needs are uncertain, the Cisco Channelized T3 SPA allows service providers to avoid determining beforehand how ports will be allocated between DS-0, DS-1, and DS-3 connections. For enterprise remote-site connection, the flexibility to support DS-0, DS-1, and DS-3 connections means this SPA reduces equipment expenditures by integrating the capabilities and services of numerous port adapters onto a single SPA. It also provides investment protection by growing with the enterprise to meet the needs of today's DS-0 and DS-1 aggregation networks and tomorrow's T3 aggregation networks.
The Cisco Channelized T3 SPA is available in 2- and 4-port options. The ports can be independently configured as clear channel T3, channelized T3 -> T1, N x T1, full-rate T1, channelized T1, fractional T1, or DS-0 connections. When configured as clear channel T3 ports, connections to DS-3 and subrate DS-3 services can be provisioned. When configured as channelized T3 ports, up to 112 T1 links or up to 1023 N x DS-0 channels can be supported, making the Cisco Channelized T3 SPA a highly flexible interface for WAN provisioning. With integrated data-service-unit (DSU) functions on a per-port basis, the Cisco Channelized T3 SPA is compatible with the large number of standards-compliant DSUs on the market.
Multilink Point-to-Point Protocol (MLPPP) is supported (in hardware) to enable link aggregation exceeding T1 capacity. Up to 12 individual T1s can be combined within a multilink bundle that appears to be a single IP link. This enables service providers to provision greater-than-T1 bandwidth incrementally, without requiring migration of the circuit and customer premises equipment (CPE) infrastructure to T3 facilities.
The Cisco Channelized T3 SPA is hot-swappable and supports service-transparent online insertion and removal (OIR), allowing removal of the SPA without impacting the interface processor and other SPAs.