• Cisco SPA-8XT3/E3 8-port T3/E3 expansion card with green PCB
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Cisco

Cisco SPA-8XT3/E3 | 8x T3/E3 clear-channel | DS3 44.736 Mb/s / E3 34.368 Mb/s | 75Ω dual BNC per port | Framing: C-bit/M23, G.751 | Requires SIP

SPA-8XT3/E3

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Description

Eight-port clear-channel T3/E3 SPA delivering unchannelized DS3/E3 connectivity for carrier backhaul and enterprise WAN edge. Each port uses 75‑ohm coax with dual BNC (Tx/Rx). Supports common T3 (C‑bit/M23) and E3 (G.751) framing with appropriate line coding. Requires a compatible Cisco SPA Interface Processor (SIP) and chassis with SPA slots.

Features

- Eight-port DS3/E3 density for compact aggregation
- Clear-channel operation for maximum throughput
- Carrier-grade framing and line coding support
- Dual-BNC per port for straightforward cabling
- Hot-swappable to minimize service impact

Warranty

All products sold by XS Network Tech include a 12-month warranty on both new and used items. Our in-house technical team thoroughly tests used hardware prior to sale to ensure enterprise-grade reliability.

All technical data should be verified on the manufacturer data sheets.

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Technical Specifications

FAQs

Technical Specifications

- Interface type: 8x T3/E3 clear-channel
- Line rate (DS3): 44.736 Mb/s; framing: C-bit parity or M23; line coding: B3ZS
- Line rate (E3): 34.368 Mb/s; framing: ITU-T G.751; line coding: HDB3
- Connector: dual BNC (Tx/Rx) per port, 75Ω coax
- Impedance: 75 ohms
- Loopbacks: local and line loopback (platform-dependent controls)
- Clocking: line/internal (platform-dependent)
- Maximum coax run: typically up to ~450 ft (cable quality dependent)
- Hardware requirement: Cisco SIP-based platform with SPA slots
- Hot-swap: supported when used with compatible SIP/chassis

FAQs

Q: Is this SPA channelized?
A: No. It is clear-channel T3/E3. For channelized applications, use a channelized T3/E3 SPA variant.

Q: What cable type is required?
A: 75Ω coaxial cable with BNC connectors (separate Tx and Rx per port).

Q: Can I mix T3 and E3 on different ports?
A: Yes. Ports can typically be configured individually as T3 or E3 (platform support required).

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