High-Density VoIP Gateway for Analog Devices


Connect up to eight analog devices to your IP network, such as fax, standard phone, or overhead paging system

Continue to use existing analog phones on your VoIP system

Excellent for IP Centrex deployments, providing remote provisioning and support for dynamic, in-service software upgrades

Clear, high-quality voice communication, using standards based voice codec's  and quality of service

Figure 1. Cisco SPA8000 8-Port IP Telephony Gateway

Product Overview

The Cisco  SPA8000 8-Port IP Telephony Gateway (Figure 1) is a full-featured analog telephone adapter (ATA) for small businesses, providing enhanced communication services via a broadband connection to the Internet.
The Cisco SPA8000 features eight RJ-11 FXS ports to connect analog telephones to IP-based data networks and includes a single multiport RJ-21 50-pin connector, offering an alternative connection choice when deploying the telephony gateway in varied environments. The device also has one 10/100BASE-T RJ-45 Ethernet interface to connect to either a router or a multilayer switch.
Solid in design, the Cisco SPA8000 is an affordable solution that is ideally suited for use in business and consumer voice over IP (VoIP) service offerings, including call centers and multidwelling environments. Customers can protect and extend their investment by continuing to use their existing analog telephones and teleconferencing equipment.
Installed by the end user and remotely provisioned, configured, and maintained by the service provider, each Cisco SPA8000 converts voice traffic into data packets for transmission over an IP network and uses common standards for voice and data networking for reliable voice and fax operation.


Toll-quality voice and carrier-grade feature support: The Cisco SPA8000 delivers clear, high-quality voice communication in diverse network conditions. Excellent voice quality in a demanding IP network is achieved via the advanced implementation of standard voice coding algorithms. The SPA8000 is interoperable with common telephony equipment such as voicemail, fax, private branch exchange (PBX), and interactive voice response systems.

Large-scale deployment and management: The Cisco SPA8000 enables service providers to provide customized services to their subscribers. It can be remotely provisioned and supports dynamic, in-service software upgrades. A highly secure profile upload saves providers the time and expense of managing and preconfiguring or reconfiguring customer premises equipment (CPE).

Ironclad security: Cisco understands that security for both end users and service providers is a fundamental requirement for a solid, carrier-grade telephony service. The Cisco SPA8000 supports highly secure, encryption-based methods for communication, provisioning, and servicing.

Telephony Features

Eight voice ports (RJ11) for analog phones or fax machines

Impedance agnostics: eight configurable settings

Call waiting, cancel call waiting, call waiting caller ID

Caller ID with name and number (multinational variants)

Caller ID blocking

Call forwarding: no answer, busy, all

Do not disturb

Call transfer

Three-way conference calling with local mixing

Message waiting indication-visual and tone based

Call return

Call back on busy

Call blocking with toll restriction

Delayed disconnect

Distinctive ringing-calling and called number

Off-hook warning tone

Selective/anonymous call rejection

Touch-tone phone keypad configuration with interactive voice response (IVR)

Fax: G.711 pass-through or real-time fax over IP via T.38 (T.38 support is dependent on fax machine and network/transport resilience)


Table 1 contains the specifications and package contents for the Cisco SPA8000 8-Port IP Telephony Gateway. Table 2 compares the SPA8000 with other Cisco Small Business Voice products.

Table 1. Specifications for the Cisco SPA8000 8-Port IP Telephony Gateway


* Note: Many specifications are programmable within a defined range or list of options. Please see the Administration Guide for details. The target configuration profile is uploaded to the SPA8000 at the time of provisioning.

Data networking

MAC address (IEEE 802.3)
IPv4 (RFC 791), upgradable to v6 (RFC 1883)
Address Resolution Protocol (ARP)
DNS A record (RFC 1706), SRV record (RFC 2782)
Dynamic Host Configuration Protocol (DHCP) client (RFC 2131)
DHCP server (RFC 2131)
Point-to-Point Protocol over Ethernet (PPoE) client (RFC 2516)
Internet Control Message Protocol (ICMP) (RFC 792)
TCP (RFC 793)
User Datagram Protocol (UDP) (RFC 768)
Real Time Protocol (RTP) (RFC 1889, 1890)
Real Time Control Protocol (RTCP) (RFC 1889)
Differentiated Services (DiffServ) (RFC 2475), type of service (ToS) (RFC 791, 1349)
VLAN tagging (IEEE 802.1p)
Simple Network Time Protocol (SNTP) (RFC 2030)
Upload data rate limiting-static and automatic
Quality of service (QoS)-voice packet prioritization over other packet types
MAC address cloning
Port forwarding
Session Initiation Protocol (SIP) channels support both UDP and TCP transport
VPN pass-through with IP Security encapsulating security payload (IPsec ESP), Point-to-Point Tunneling Protocol (PPTP), and Layer 2 Tunneling Protocol (L2TP)

Voice gateway

SIP v2 (RFC 3261, 3262, 3263, 3264)
SIP proxy redundancy-dynamic via DNS SRV, A records
Reregistration with primary SIP proxy server
SIP support in Network Address Translation (NAT) networks (including Serial Tunnel [STUN])
Secure (encrypted) calling via prestandard implementation of Secure RTP
Codec name assignment
G.711 (a-law and -law)
G.726 (16/24/32/40 kbps)
G.729 A
G.723.1 (6.3 kbps, 5.3 kbps)
Dynamic payload
Adjustable audio frames per packet
Fax tone detection pass-through
Fax pass-though (using G.711)
Dual-tone multifrequency (DTMF): in-band and out-of-band (RFC 2833) (SIP info)
Flexible dial plan support with interdigit timers and IP dialing
Call progress tone generation
Jitter buffer-adaptive
Frame loss concealment
Full-duplex audio
Echo cancellation (G.165/G.168)
Voice activity detection (VAD) with silence suppression
Comfort noise generation (CNG)
QoS (Ethernet port upstream bandwidth control, physical port, MAC address, application)
Attenuation/gain adjustments
Flash hook timer
Message waiting indicator (MWI) tones
Visual message waiting indicator (VMWI) via frequency shift keying (FSK)
Polarity control
Hook flash event signaling
Caller ID generation (name and number)-Bellcore, DTMF, European Telecommunications Standards Institute (ETSI)
Music on hold client
Streaming audio server-up to 10 sessions
System dial-on-demand routing (DDR) synchronous dynamic RAM (SDRAM)-16 MB
System flash ROM-4 MB


Password-protected system reset to factory default
Password-protected administrator and user access authority
HTTPS with factory-installed client certificate
HTTP digest-encrypted authentication via MD5 (RFC 1321)
Authentication: Extensible Authentication Protocol Transport Layer Security (EAP-TLS), EAP Tunneled Transport Layer Security (EAP-TTLS), and Protected EAP (PEAP)
Up to 256-bit Advanced Encryption Standard (AES) encryption

Provisioning, administration, and maintenance

Web browser administration and configuration via integral web server
Telephone keypad configuration with interactive voice prompts
Automated provisioning and upgrade via HTTPS, HTTP, Trivial File Transfer Protocol (TFTP)
Asynchronous notification of upgrade availability via NOTIFY
Nonintrusive, in-service upgrades
Report generation and event logging
Stats in BYE message
Syslog and debug server records
Per-line and purpose configurable syslog and debug options

Physical interfaces

8-port standard FXS voice ports (RJ-11)
RJ-21 (50-pin telco connector) multiport voice connection
1 WAN 100BASE-T RJ-45 Ethernet Port (IEEE 802.3)
Reset button

Subscriber line interface circuit (SLIC)

Ring voltage: 40-90 Vpk configurable
Ring frequency: 20-25 Hz
Ring waveform: trapezoidal
Maximum ringer load: 5 ringer equivalence numbers (RENs)
On-hook/off-hook characteristics:
On-hook voltage (tip/ring): -46 ~ -56V
Off-hook current: 18-25 mA
Terminating impedance: 600 ohm resistive or 270 ohm + 750 ohm
150 nF complex impedance
Frequency response 300-3400 Hz
Return loss (600 ohm, 300-3400 Hz) up to 20 dB
Insertion loss (1 Vrms at 1 kHz) 3-4 dB
Total harmonic distortion (THD) (350 mV peak at 300 Hz) up to 3%
Idle channel noise-72 dB (typical)
Longitudinal balance 55 dB (typical)
Off-hook threshold (line seizure) Rdc < 1000 ohm
On-hook threshold (line release) Rdc >10000 ohm
Rdc DC supervisory range Rdc > 450 ohm

Regulatory compliance

FCC (Part 15 Class B), CE, ICES-003, C-Tick certification, Restriction of Hazardous Substances (RoHS), UL

Power supply

Switching type (100-240V) automatic
DC input voltage: 12V DC at 3.0A max.
Power adapter: 100-240V, 50-60 Hz AC input

Indicator lights/LEDs

Power, Ethernet, Voice Status, Phone 1 through 8


Quick installation, user, and configuration guides
Administration guide-service providers only
Provisioning guide-service providers only



W x H x D

6.69 x 1.54 x 8.66 in.

(170 x 39 x 220 mm)


2.85 lb (1.30 kg)

Operating temperature

32 to 113F (0 to 45C)

Storage temperature

-13 to 185F (-20 to 85C)

Operating humidity

10% to 90% noncondensing, operating and nonoperating

Storage humidity

10% to 90% noncondensing, operating and nonoperating

Package Contents

Cisco SPA8000 8-Port IP Telephony Gateway
12V power adapter
RJ-45 Ethernet cable
Quick installation guide

Product Warranty

1-year limited hardware warranty with return to factory replacement and 90-day limited software warranty


Table 2. Cisco Small Business Voice Gateways and ATAs


Service Lines

Active Calls

3-Way Conferences

Public Switched Telephone Network (FXO) Connections

Cisco SPA2102 Phone Adapter with Router





Cisco SPA3102 Phone Adapter with Router





Cisco SPA8000 8-Port Telephony Gateway





Specification Sheets / Installation guides / Associated files

Warranty: 1 Year Return to Base

Full manufacturers warranty details are available at the manufacturers (Cisco) web site.

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