Cisco SPA-VA8XT1/E1 Full Official Product Description

1. Product Overview & SKU Definition

Official Full Name

SKU Breakdown

1. SPA: Shared Port Adapter, Cisco cross-platform I-Flex modular architecture
2. VA: Voice Accelerated, optimized for T1/E1 PRI voice trunk signaling and media processing
3. 8X: 8 independent physical T1/E1 ports per single-height SPA
4. T1/E1: Dual-mode configurable ports, all ports uniform T1 or uniform E1 operation
5. SuffixSPA-VA8XT1/E1=：Factory-new spare SKU for field replacement

Core Positioning

Supported Hardware Platforms

• Cisco Catalyst 6500 Series Multilayer Switches
• Cisco 7600 Series Service Edge Routers
• Cisco ASR 1000 Series Aggregation Services Routers
• Cisco ASR 9000 Series Carrier Routers
• Cisco XR 12000 Series Internet Backbone Routers
• Mandatory carrier card: SIP-400 / SIP-600 SPA Interface Processor

Minimum Software Version Requirements

• Cisco IOS (7600 / Catalyst 6500): IOS 15.4(1)S and later S-train releases
• Cisco IOS XE (ASR 1000): IOS XE 3.10.1 and newer
• Cisco IOS XR (ASR9000 / XR12000): IOS XR 5.1.1 or above
• Voice feature prerequisite: Cisco Unified Communications Manager (CUCM) compatible IOS voice feature sets with K9 security licensing

Standard Factory Packaging Contents

1. SPA-VA8XT1/E1 single-height voice channelized T1/E1 SPA main PCB module
2. ESD anti-static shielding bag and shock-absorbing OEM foam protective packaging
3. Hardware installation quick reference guide: ESD handling rules, OIR hot-swap steps, T1/E1 voice trunk basic IOS configuration template
4. Global regulatory compliance document packet (electrical safety, EMC, NEBS Level 3, RoHS, laser safety)

2. Core Hardware & Functional Capabilities

Key Port & Channel Performance

• Port density: 8 independent RJ-45 T1/E1 ports per SPA
• Config mode restriction: All 8 ports must be set uniformly to T1 mode OR uniformly to E1 mode (mixed T1+E1 on single SPA unsupported)
• T1 port line rate: Max 1.536 Mbps per port, channelized down to individual DS0 (64 kbps) channels
• E1 port line rate: 1.984 Mbps framed mode / 2.048 Mbps unframed clear-channel mode, 32 DS0 per E1 trunk
• Maximum logical channel capacity: Up to 256 independent 64k DS0 logical HDLC channels across all 8 ports
• Integrated built-in CSU/DSU; no external line interface hardware required

T1 Line Standard & Encoding Features

• Line encoding: AMI, B8ZS
• Framing modes: D4 Superframe (SF), Extended Superframe (ESF)
• Maintenance support: ANSI T1.403, AT&T TR54016 FDL facility data link diagnostics
• Clock modes: Internal free-running clock, receiver recovered line clock
• Line length control: Short-haul and long-haul CSU transmission attenuation tuning

E1 Line Standard & Encoding Features

• Compliance: ITU-T G.703, G.704, ETSI 300156 carrier-grade standards
• Line encoding: AMI, HDB3
• Impedance support: 120-ohm RJ-45 UTP native; optional RJ45-to-BNC adapter for 75-ohm coaxial deployments
• Clock modes: Internal clock, loopback recovered line clock

Voice & Signaling Core Capabilities (VA Voice-Accelerated Feature)

1. ISDN PRI Voice Trunking: Full T1 PRI (23B+D) and E1 PRI (30B+D) ISDN Q.921/Q.931 signaling support for enterprise PBX, contact center, CUCM VoIP gateway trunk interconnection
2. Voice Media Transport: DS0 channelized voice over HDLC, VoIP trunk backhaul, TDM-to-IP gateway translation
3. Signaling Types Supported: PRI ISDN, CAS robbed-bit signaling for legacy analog PBX integration
4. Voice QoS Hardware Offload: Per-DS0 queuing, voice packet prioritization, jitter buffer management offloaded to SPA silicon to reduce route processor CPU overhead

Data WAN Encapsulation & Multilink Features

• MLPPP (RFC1990) multi-link PPP bundling
• MLFR FRF.16 Frame Relay multilink
• LFI link fragmentation and interleaving over Frame Relay (FRF.12) and MLPPP for voice-data mixed trunk congestion mitigationCisco Russ...

Zero-Disruption OIR Hot-Swap Maintenance

Unified CLI & SNMP Network Management

Front Panel LED Status Indicators

1. Global SPA STATUS LED
   • Off: No power supplied to SPA or critical hardware fault detected
   • Solid Amber: SPA executing boot firmware initialization or minor operational warning state
   • Solid Green: SPA fully initialized, voice trunk processing active and ready for traffic
   • Blinking Green: SPA undergoing OIR insertion initialization sequence post hot-swap installation
2. Per-Port C/A (Carrier/Alarm) LED (8 independent port indicators)
   • Off: No RJ-45 cable plugged in, port administratively shut down, or optical/line LOS signal loss detected
   • Solid Amber: Stable physical line link present but one or more active T1/E1 alarms (LOF, AIS, excessive BER)
   • Solid Green: Stable error-free T1/E1 trunk carrier established, no active port layer alarms
3. Per-Port ACT (Active Traffic) Indicator (integrated with C/A LED blink state)
   • Blinking Green: Bidirectional DS0 voice/data channel traffic actively transmitting/receiving on the port; blink frequency proportional to real-time trunk bandwidth utilization

3. Electrical, Thermal & Physical Specifications

Power Consumption

• Idle power draw (no active T1/E1 trunks, all ports disabled): ~23 Watts
• Medium load power draw (multiple PRI voice trunks active, moderate mixed voice-data traffic): ~27 Watts
• Full peak load power dissipation (all 8 ports running full line-rate DS0 voice trunk traffic): ≤30 Watts
• Power input: 3.3V DC power delivered exclusively via SIP backplane connector; no external auxiliary power ports required

Environmental Operating Parameters

• Continuous standard operating temperature range (datacenter / central office voice room): 5°C ~ 40°C (41°F ~ 104°F)
• Short-term extended operating temperature range (temporary non-standard equipment closet deployment): -5°C ~ 45°C (23°F ~ 113°F)
• Non-operating storage temperature range (spare inventory transit and warehouse storage): -40°C ~ 70°C (-40°F ~ 158°F)
• Relative humidity: Operating environment 5%–85% RH non-condensing; Storage environment 5%–95% RH non-condensing
• Certified operating altitude: -60m ~ 2000m above sea level
• Cooling architecture: Passive convection cooling with integrated stamped aluminum heatsink, no onboard mechanical cooling fans. Chassis forced airflow provides supplementary thermal dissipation under maximum full voice trunk traffic load
• Reliability rating: MTBF (Mean Time Between Failures) approximately 330,000 hours under standard datacenter operating conditions
• NEBS Compliance: Fully meets GR-63-Core and GR-1089-Core NEBS Level 3 environmental and electrical surge immunity standards for permanent carrier central office voice switching room deployment

Physical Form Factor & Dimensions

• Form Factor: Single-height Shared Port Adapter (SPA), occupies one single-height subslot on SIP-400/SIP-600 carrier cards
• Overall External Dimensions (Width × Depth × Height): 171.5mm × 184.9mm × 20.3mm (6.8 in × 7.3 in × 0.8 in)
• Net module weight (excluding RJ45 cables, BNC adapters, and retail packaging): Approximately 0.35 kg

4. Global Regulatory & Compliance Certifications

1. Electrical Safety Standards: UL 60950-1, CSA C22.2 No.60950-1, IEC 60950 CB Scheme, EN 60950-1, AS/NZS 3260, GB 4943 China national IT equipment safety standard
2. EMC / EMI Electromagnetic Compatibility: FCC CFR Title 47 Part 15 Class A, ICES-003 Class A, VCCI Class A ITE, EN55022 Class A, CISPR 22 Class A, CISPR 24, full EN 61000 series ESD, electrical surge, radiated and conducted immunity compliance
3. Telecommunications Industry Standards: ANSI T1.403 T1 specs, ITU-T G.703/G.704 E1 specs, ISDN Q.921/Q.931 PRI signaling standards, Bellcore NEBS Level 3
4. Environmental Directives: Full EU RoHS Restriction of Hazardous Substances compliance, EU WEEE Waste Electrical and Electronic Equipment recycling directive compliant

5. Core Deployment Advantages

1. Voice-Optimized I-Flex Modular Architecture Maximizes Chassis Voice Trunk Density

   As a single-height voice-specialized SPA with 8 T1/E1 ports, it delivers industry-leading high-density PRI voice trunk connectivity within minimal chassis subslot space. Network operators can mix voice VA T1/E1 SPA, data channelized SPA, ATM SPA, POS SPA modules on a single SIP carrier card to customize mixed voice-data service density, unifying spare parts inventory across Catalyst 6500, 7600, ASR 1000/9000 and XR 12000 platforms and reducing long-term spare capital expenditure for multi-site enterprise voice networks and service provider voice aggregation POPs.
2. Dedicated Voice Hardware Offloading Eliminates Route Processor CPU Bottlenecks

   All resource-intensive T1/E1 DS0 channelization, ISDN PRI D-channel signaling processing, voice media QoS queuing, jitter buffering and TDM-to-IP translation operations are fully offloaded to dedicated onboard voice acceleration silicon hardware. This reserves critical host route processor CPU resources exclusively for core control-plane network functions including BGP, OSPF, IS-IS routing adjacency maintenance, device system management and logging services. Hardware voice offloading prevents routing protocol flapping, excessive voice trunk packet latency, dropped VoIP media packets and customer-facing PBX/contact center voice service outages during peak full line-rate PRI trunk traffic loads.
3. Non-Disruptive OIR Hot-Swap Maintenance Eliminates Mission-Critical Voice Trunk Downtime

   Built-in full OIR hot-swap capability allows field voice network technicians to replace faulty voice SPA modules without chassis power cycles or traffic interruption on other active T1/E1 voice trunks hosted on the same SIP carrier card. This capability eliminates lengthy scheduled maintenance windows for mission-critical enterprise contact center inbound/outbound voice trunks, corporate multi-branch PBX interconnection PRI circuits and service provider wholesale voice trunk aggregation networks, substantially improving overall end-to-end voice service availability metrics and reducing NOC field maintenance labor overhead expenses.
4. Integrated CSU/DSU & Dual T1/E1 Universal Port Design Reduces Deployment Hardware Cost

   SPA-VA8XT1/E1 embeds fully functional CSU/DSU circuitry for every port, removing the requirement to deploy separate external standalone CSU/DSU adapters for each T1/E1 trunk circuit, cutting total voice trunk hardware capital cost and simplifying rack space cabling management in datacenter voice equipment rooms. The universal dual-mode port design supports either North American T1 or EMEA/Asia E1 trunk standards on the same SPA hardware, enabling standardized inventory stocking for multi-region distributed enterprise networks and global service provider carrier deployments without separate T1-only or E1-only SPA hardware stock.
5. Fanless Passive Thermal Design Delivers Long-Term Stable Voice Trunk Reliability

   The SPA adopts a fully passive fanless aluminum heatsink thermal dissipation architecture with zero moving mechanical fan components. This design eliminates the most common hardware failure vectors associated with active cooling systems, including fan motor mechanical wear-out, dust and debris accumulation blocking airflow, fan power supply faults and fan noise interference in quiet central office voice switching rooms. The passive cooling design enables stable, reliable 24/7 unattended continuous voice trunk operation in remote unmanned regional office equipment closets, service provider POP voice aggregation router sites and enterprise core datacenter voice gateway deployments with minimal long-term on-site hardware maintenance requirements. Low idle and peak operational power consumption reduces overall router chassis total power draw and associated datacenter cooling energy expenditure over the multi-year hardware service lifecycle, lowering total cost of ownership (TCO) for large-scale distributed multi-site carrier and enterprise voice trunk network deployments.

Supplementary Product Notes

UNSPSC Classification Code

K9 Secure Software Compliance

Standard Hardware Warranty Terms