The Cisco 4-Port Serial SPA delivers flexible, high-performance WAN connectivity for enterprise and service provider networks. It provides four synchronous serial ports, each capable of speeds up to 8 Mbps.

The Cisco 4-Port Serial SPA supports a variety of interface types determined by separately purchased cable type connected to it. The supported electrical standards include EIA-232, X.21, V.35, EIA-530, EIA-530A, and EIA-449. Each port can be configured independently of the others to provide superior flexibility. Also depending on the cable type, each interface can either be configured for Date Terminal Equipment (DTE) or Data Communications Equipment (DCE).

The serial interfaces can be used to aggregate WAN connections from remote sites. The ability to support 8 Mbps per port is ideal for low- and medium-density aggregation at the head end. The Cisco 4-Port Serial SPA can also be installed wherever a service provider requires an external CSU/DSU demarcation point.

Description:

CISCO SPA-4XT-SERIAL 4-Port Serial Shared Port Adapter

Product Details:

The Cisco 4-Port Serial SPA offers many advantages, including:

• Four software-configurable serial ports

• Each port capable of 8 Mbps depending on the attached cable type

• Each port can support EIA-232, X.21, V.35, EIA-530, EIA-530A, and EIA-449 serial standards

• Capable of both DTE and DCE modes

• Support for all major encapsulations including High-Level Data Link Control (HDLC), Frame Relay, and Multilink Point-to-Point Protocol (MLPPP)

The Cisco 4-Port Serial SPA is a cost-effective solution that delivers very high performance at a very low price per port.

The Cisco SPA/SIP portfolio offers the following additional advantages:

• Highly modular, flexible, intelligent interface processors

– Superior flexibility, supporting a combination of interface types on the same interface processor for consistent services, independent of access technology

– Pioneering programmable interface processors that provide flexibility for the service diversity required in next-generation networks

– Innovative design that supports intelligent service delivery without compromising on performance

• Increased speed-to-service revenue

– The scalable, programmable Cisco architecture extended to 10 Gbps dramatically improves customer density, increasing potential revenue per platform.

– Interface breadth (copper, channelized, POS, ATM, and Ethernet) on a modular interface processor allows service providers to roll out new services more quickly, helping ensure that all customers, large and small, receive consistent, secure, and guaranteed services.

– High-density Small Form-Factor Pluggable (SFP) interfaces are featured for high-port-count applications with reach flexibility. Future optical technology improvements can be adopted using existing SPAs.

• Dramatically improved return on your routing investment

– Improved slot economics and increased density reduce capital expenditures (CapEx).

– The ability to easily add new interfaces as they are needed facilitates a "pay-as-you-grow" business model.

– SPAs are shared across multiple platforms, and can be easily moved from one to another, providing consistent feature support, accelerated product delivery, and a significant reduction in operating expenses (OpEx) through common sparing as service needs change.

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