Cisco SPA-8XCHT1/E1 Overview

The Cisco 8-Port Channelized T1/E1 SPA SPA-8XCHT1/E1 provides one of the greatest densities currently offered in the industry at 8 ports per SPA and up to 32 ports per SIP. At a cost per T1/E1 port less than that of a standard serial port with external channel service unit/data service unit (CSU/DSU), the Cisco 8-Port Channelized T1/E1 SPA is cost-effective for all WAN connectivity.

Table 1 shows the quick spec.

Model	SPA-8XCHT1/E1
Description	Cisco ASR 9000 Adapter, SPA-8XCHT1/E1, 8-port Channelized T1/E1 to DS0 Shared Port Adapter
Product Name	Cisco 8-Port Channelized T1/E1 Shared Port Adapter
Product compatibility	Cisco Catalyst 6500 Series Switches Cisco 7600 Series Routers Cisco 12000 Series Routers Cisco XR 12000 Series Routers Cisco ASR 1000 Series Router Cisco ASR 9000 Series Router
Port density per SPA	8 ports
Physical interface	• RJ-45 connector • RJ-45 to BNC adapter cable option

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SPA-8XCHT1/E1 specifications
Description	Cisco ASR 9000 Adapter, SPA-8XCHT1/E1, 8-port Channelized T1/E1 to DS0 Shared Port Adapter
Product Name	Cisco 8-Port Channelized T1/E1 Shared Port Adapter
Product compatibility	Cisco Catalyst 6500 Series Switches Cisco 7600 Series Routers Cisco 12000 Series Routers Cisco XR 12000 Series Routers Cisco ASR 1000 Series Router Cisco ASR 9000 Series Router
Port density per SPA	8 ports
Physical interface	• RJ-45 connector • RJ-45 to BNC adapter cable option
Protocols	Encapsulation protocols: • HDLC • Point-to-Point Protocol (PPP), RFC 1662 • Frame Relay, RFC 1490 Multilink support: • MLPPP, RFC 1990 • MLFR, FRF.16 • LFI over Frame Relay (FRF.12) and MLPPP
Features and functions	• Up to 8 independent T1 or E1 ports configurable as either all T1 or all E1 only • Full-duplex connectivity • Channelized and fractional T1/E1, clear channel E1 supported • Up to 256 usable n x 64K, where n is 1 to 24 for T1 and 1 to 32 for E1 • Line-rate performance for all ports channelized to DS-0 • Integrated CSUs/DSUs • Internal or network clocking selectable on each port • Per-port, dual-color status LED • Loopback capabilities: • Local and remote loopback at the T1/E1 level • Response to embedded loopback commands • Insertion of loopback commands into transmitted signal • N x DS-0 system-side loopback • Bit-error-rate-testing (BERT) pattern generation and detection per channel (maximum of 6 T1/E1 at a time) • Programmable pseudorandom pattern up to 32 bits long, including all 0s, all 1s, 211, 215, 220, 220 Quasi-Random Signal Sequence (QRSS), 223, alternating 0s and 1s, 1-in-8, and 3-in-24 • 32-bit error-count and bit-count registers • Fully independent transmit and receive sections • Detection of test patterns with bit error rates up to 10-2 • 24-hour history maintained for error statistics and failure counts, at 15-minute intervals • 16- and 32-bit cyclic redundancy check (CRC); 16-bit default
T1-specific features	• Data rate to 1.536 Mbps per port • Impedance: 100 ohms • D4 Super Frame (SF) or Extended Super Frame (ESF) framing • Alternate mark inversion (AMI) or binary 8-zero substitution (B8ZS) line encoding • ANSI T1.403 and AT&T TR 54016 Facility Data Link (FDL) • Selectable T1 cable length in increments from 0 to 655 feet • Selectable T1 CSU line build-out (LBO): 0, -7.5, -15, and -22.5 dB • Selectable T1 CSU receiver gain: 26 or 36 dB • Alarm monitoring: • Alarm indication signal (AIS) • Out of frame (OOF)