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by Cisco
Product Line: Cisco SPA Interface Processor (SIP)
Product Type: Interface Processor
Original price $0.00 - Original price $263.00
Original price
$0.00 - $263.00
Current price $263.00
Title: Used

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Product Description

The SPA-8XCHT1/E1 offers 8 ports with RJ-45 connectors, including an option for an RJ-45 to BNC adapter cable, supporting a variety of encapsulation protocols such as HDLC, PPP (RFC 1662), and Frame Relay (RFC 1490). For T1 connections, it provides a data rate up to 1.536 Mbps per port with features like 100 ohms impedance, and selectable T1 CSU line build-out and receiver gain. E1 connections benefit from a data rate up to 2.048 Mbps (unframed mode), 120 ohms impedance (with a 75-ohm configuration option via adapter), and HDB3 line encoding, ensuring flexibility and scalability in network infrastructure deployment.

Key Feature for the SPA-8XCHT1/E1

  • What is the port density of the SPA?
    The SPA supports 8 ports.
  • Which physical interface does it use?
    It utilizes an RJ-45 connector, with an option for an RJ-45 to BNC adapter cable.
  • Can you list the supported encapsulation protocols?
    The supported encapsulation protocols are HDLC, Point-to-Point Protocol (PPP) RFC 1662, and Frame Relay RFC 1490.
  • What are the T1-specific features of this device?
    T1-specific features include a data rate up to 1.536 Mbps per port, 100 ohms impedance, options for D4 Super Frame (SF) or Extended Super Frame (ESF) framing, AMI or B8ZS line encoding, compliance with ANSI T1.403 and AT&T TR 54016 FDL, selectable cable length and CSU settings.
  • What data rates are supported for E1 connections?
    E1 connections support data rates up to 2.048 Mbps in unframed mode or 1.984 Mbps in framed mode per port.
  • Describe the reliability and availability features of the hardware.
    Features include Online Insertion and Removal (OIR) and the ability to reset the SPA software individually.
  • Which MIB is supported for network management purposes?
    The RFC 1406 MIB is supported for network management.
  • What are the operating and storage temperature ranges?
    The operating temperature range is 41 to 104°F (5 to 40°C), and the storage temperature range is -38 to 150°F (-40 to 70°C).
  • Can the device manage varying humidity levels?
    Yes, it operates at 5 to 85% relative humidity and can be stored at 5 to 95% relative humidity.
  • What are the E1-specific features?
    E1-specific features include an impedance of 120 ohms, support for unframed E1, CRC4, or non-CRC4 framing, and HDB3 line encoding. Additionally, an RJ-45 to BNC adapter cable can configure it for a 75-ohm setup.

Product Review

The Cisco SPA-8XCHT1/E1 offers a high port density with 8 ports, making it suitable for environments requiring multiple T1/E1 connections. It supports a range of encapsulation protocols including HDLC, PPP, and Frame Relay, alongside detailed T1 and E1-specific features for versatile network configurations. However, the reliance on older physical interfaces and encapsulation standards may limit its application in modern networks seeking advanced or emerging technologies.


The Cisco SPA-8XCHT1/E1 is a Shared Port Adapter designed to provide high-density networking solutions. It features 8 ports, increasing the port density for businesses and network environments. Each port connects via an RJ-45 connector, with an option for an RJ-45 to BNC adapter cable, facilitating flexible installation and deployment across various physical interfaces. This device supports multiple encapsulation protocols, enhancing its versatility in network function and design. It includes High-Level Data Link Control (HDLC) for reliable data transfer, Point-to-Point Protocol (PPP, RFC 1662) for direct connection between two nodes, and Frame Relay (RFC 1490) for efficient data transmission in packet-switched networks. These protocols ensure compatibility and efficient operation within diverse networking environments. For T1 connections, the SPA-8XCHT1/E1 offers a data rate up to 1.536 Mbps per port, suitable for high-speed data and voice applications. It supports both D4 Super Frame (SF) and Extended Super Frame (ESF) framing, as well as AMI or B8ZS line encoding, providing flexibility in configuring data transmission methods. The device also adheres to ANSI T1.403 and AT&T TR 54016 standards for Facility Data Link (FDL), ensuring reliable communication and compatibility with existing network infrastructure. Users can select T1 cable length in increments from 0 to 655 feet and adjust CSU line build-out (LBO) and receiver gain for optimized signal quality. E1 connections benefit from a data rate up to 2.048 Mbps (unframed mode) or 1.984 Mbps (framed mode) per port. The SPA-8XCHT1/E1 supports both 120-ohm impedance directly and offers a 75-ohm configuration option through the RJ-45 to BNC adapter cable, accommodating various E1 installations. It allows for unframed E1, CRC4, or non-CRC4 framing and utilizes HDB3 line encoding, ensuring efficient and flexible data transmission options for E1 networks.
  • Reliability is enhanced with Online Insertion and Removal (OIR) and a single SPA software reset feature, facilitating maintenance without significant downtime.
  • It is managed through Simple Network Management Protocol (SNMP), allowing for easy integration and management within existing network management frameworks.
  • The device complies with RFC 1406 MIB standards, ensuring comprehensive monitoring and management capabilities.
Operating within a temperature range of 41 to 104°F (5 to 40°C) and a storage temperature range of -38 to 150°F (-40 to 70°C), the SPA-8XCHT1/E1 is designed to withstand various environmental conditions. Its operating humidity range is 5 to 85% relative humidity, with a storage humidity range of 5 to 95%, ensuring durability and reliability across different climates. In summary, the Cisco SPA-8XCHT1/E1 Shared Port Adapter offers a high-density, flexible solution for T1 and E1 networking. With support for multiple protocols, adjustable settings for optimized signal quality, and reliable performance in diverse environmental conditions, it is an efficient choice for expanding network capacity and functionality.


Part Number and ManufacturerCisco SPA-8XCHT1/E1
Port Capacity per Module8 ports
Interface TypeRJ-45 connector
Interface OptionRJ-45 to BNC conversion cable
Supported Encapsulation TypesHDLC
Supported Encapsulation TypesPPP as per RFC 1662
Supported Encapsulation TypesFrame Relay as per RFC 1490
T1 Port CharacteristicsPort speed up to 1.536 Mbps
T1 Port Characteristics100 ohms impedance
T1 Port CharacteristicsSupport for D4 SF or ESF framing
T1 Port CharacteristicsAMI or B8ZS line coding options
T1 Port CharacteristicsCompliance with ANSI T1.403 and AT&T TR 54016 FDL
T1 Port CharacteristicsAdjustable cable length from 0 to 655 feet
T1 Port CharacteristicsLBO options: 0, -7.5, -15, and -22.5 dB
T1 Port CharacteristicsCSU receiver gain settings: 26 or 36 dB
E1 Port FeaturesSpeed up to 2.048 Mbps (unframed) or 1.984 Mbps (framed)
E1 Port Features120 ohms impedance, with 75-ohm option via adapter
E1 Port FeaturesSupport for unframed E1, CRC4, and non-CRC4 framing
E1 Port FeaturesHDB3 line coding
System ResilienceOIR supported, SPA software reset available
Supported MIBsRFC 1406 MIB
Network Management ProtocolSNMP support
Operating Temperature Range41 to 104°F (5 to 40°C)
Storage Temperature Range-38 to 150°F (-40 to 70°C)
Operating Humidity Range5 to 85% RH
Storage Humidity Range5 to 95% RH

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