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  • ModelSPA-8XCHT1/E1
  • MakerCisco
  • Description8-Port Channelized T1/E1 Shared Port Adapter
  • Rental문의요망
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Today’s global enterprise and service provider networks require diverse networking solutions to meet both economic and evolving connectivity needs. The demand for high-density, cost-effective solutions increases as corporate intranets expand to include more regional offices and increased numbers of remote and mobile users.

The Cisco 8-Port Channelized SPA T1/E1 Version 2 (Figure 1) provides one of the greatest densities currently available in the industry at 8 ports per SPA and up to 32 ports per SIP. The cost per T1 or E1 port is less than that of a standard serial port with external channel service unit (CSU) or data service unit (DSU), which makes the Cisco 8-Port Channelized T1/E1 SPA Version 2 cost-effective for all WAN connectivity.

This SPA is designed to provide a full 8-port channelized solution for Cisco 6500 Series, 7600 Series, ASR1000 Series, ASR9000 Series and 12000 Series Routers. The interfaces can be channelized, fractional, or unframed (E1) with up to 256 independent High-Level Data Link Control (HDLC) channels definable for T1 and E1 applications. With these capabilities, the Cisco 8-Port Channelized SPA T1/E1 Version 2 eliminates the need for separate interface types for separate connection requirements.

Multilink Point-to-Point Protocol (MLPPP) is supported in hardware to allow link aggregation greater than T1 capacity. Up to eight individual T1s can be combined within a multilink bundle that appears to be a single IP link. As a result, service providers can provision greater-than-T1 bandwidth incrementally, without migrating the circuit and customer premises equipment (CPE) infrastructure to T3 facilities.

The Cisco 8-Port Channelized T1/E1 SPA Version 2 is hot-swappable and supports service-transparent online insertion and removal (OIR), allowing removal of the adapter without affecting the interface processor and other SPAs.

Product Specifications



Product compatibility

Cisco 7600 Series Routers

Cisco XR 12000 Series Routers

Cisco ASR 1000 Series Aggregation Services Routers

Cisco ASR 9000 Series Routers

Minimum software version

Cisco 7600 Series Routers – Cisco IOS® 15.4(1)S

Cisco XR 12000 Series Routers – Cisco IOS XR 5.1.1

Cisco ASR 1000 Series Router – Cisco IOS XE 3.10.1

Cisco ASR 9000 Series Router – Cisco IOS XR 5.1.1

Port density per SPA

8 ports

Physical interface

●  RJ-45 connector
●  RJ-45 to BNC adapter cable option


Encapsulation protocols:

●  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 and DSUs
●  Internal or network clocking selectable on each port
●  Per-port, dual-color status LED
●  Loopback capabilities:
◦   Local and remote loopback at the T1 and 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)
◦   Far-end alarm failure (yellow or distant alarm)
●  Performance data collection:
◦   CRC and bit errors
◦   Framing bit errors
◦   Line errored seconds
◦   Far-end errored seconds
◦   Far-end severely errored seconds
◦   Far-end unavailable seconds
◦   Line coding violation (LCV)

E1-specific features

●  Data rate to 2.048 Mbps (unframed mode) or 1.984 Mbps (framed mode) per port
●  Impedance: 120 ohms (RJ-45 to BNC adapter cable offers 75-ohm configuration option)
●  Unframed E1, CRC4, or non-CRC4 framing
●  High-density bipolar with three zeroes (HDB3) line encoding
●  Alarm monitoring:
◦   AIS
◦   OOF
◦   Remote alarm indication (RAI)
●  Performance data collection:
◦   CRC and bit errors
◦   Framing bit errors
◦   Far-end block error (FEBE)
◦   LCV

Reliability and availability

●  OIR
●  Single SPA software reset


RFC 1406 MIB

Network management

Simple Network Management Protocol (SNMP)

Physical specifications

●  Weight: 0.75 lb (0.34 kg)
●  Height: 0.8 in. (2.03 cm) (single height)
●  Width: 6.75 in. (17.15 cm)
●  Depth: 7.28 in. (18.49 cm)
●  Power 9.4W maximum

Compliance and agency approvals

CE Marking


●  UL 60950
●  CSA 22.2 No.60950
●  IEC 60950
●  EN 60950
●  AS/NZS 3260
●  TS001


●  CFR47
●  Part 15
●  ICES 003
●  EN55022
●  CISPR 22
●  AS/NZ 3548
●  EN55024
●  EN50082-1
●  EN61000-6-1

Telecom (T1)

●  ANSI T1.403

Telecom (E1)

●  ITU G.703
●  G.704
●  G.706

Environmental specifications

●  Operating temperature: 41 to 104°F (5 to 40°C)
●  Storage temperature: -38 to 150°F (-40 to 70°C)
●  Operating humidity: 5 to 85% relative humidity
●  Storage humidity: 5 to 95% relative humidity





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