External Gateway Solution for an On-Premise PBX
Highlights
Increase in FXO port density to connect PSTN lines
Adds VoIP to a legacy TDM PBX or key system
Converts voice traffic into data packets for transmission over an IP network
Supports SIP standards for voice and data networking, for reliable voice and fax operation
Includes highly secure, encryption-based methods for communicating, provisioning, and servicing
Figure 1. Cisco SPA8800 IP Telephony Gateway with 4 FXS and 4 FXO Ports
Product Overview
Developed for small businesses, the Cisco SPA8800 IP Telephony Gateway (Figure 1) adapts to the needs of businesses that maintain their own on-premise IP private branch exchange (PBX) or that want to add voice over IP (VoIP) to their legacy time-division multiplexing (TDM) PBX or key system. The SPA8800 can be configured to be a FXO gateway for an Asterisk open source PBX, providing a versatile solution when conditions favor an external device.
Powered by industry-leading VoIP technology from Cisco, the SPA8800 is designed with a solid hardware casing and contains many standard features, including four RJ-11 FXS and four FXO ports, a 10/100BASE-T RJ-45 Ethernet interface to connect to either a router or multilayer switch, and an auxiliary port for local administration. The gateway also includes a single multiport RJ-21 50-pin connector, offering an alternative connection choice for FXO and FXS ports when deploying the gateway in varied environments.
The SPA8800 features a high level of security by implementing state-of-the-art technologies to provide standards-based encryption protocols (Session Initiation Protocol [SIP] over Transport Layer Security [TLS], Secure Real Time Transport Protocol [SRTP], and HTTPS/SSL). The gateway's provisioning capabilities give service providers a secure mechanism not for only remotely managing the device, but also for installing software upgrades without interrupting service and obtaining performance measurements and troubleshooting information.
The Cisco SPA8800 is an affordable IP telephony gateway solution that is ideal for small business environments that have VoIP service and also require a connection to the public switched telephone network (PSTN). It can be used with existing analog telephones and teleconferencing equipment, enabling small business customers to protect and extend their investments.
Features
Toll-quality voice and carrier-grade feature support: The Cisco SPA8800 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 SPA8800 is interoperable with common telephony equipment such as voicemail, fax, PBX, and interactive voice response systems.
Large-scale deployment and management: The Cisco SPA8800 enables service providers to provide customized services to their subscribers. The gateway 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 SPA8800 supports highly secure, encryption-based methods for communication, provisioning, and servicing.
Specifications
Table 1 contains the specifications and package contents for the Cisco SPA8800 IP Telephony Gateway with 4 FXS and 4 FXO Ports. Table 2 compares the Cisco SPA8800 with other Cisco Small Business Voice products. Table 3 gives ordering information for the SPA8800.
Table 1. Specifications for the Cisco SPA8800 IP Telephony Gateway with 4 FXS and 4 FXO Ports
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Specifications
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* 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 Cisco SPA8800 at the time of provisioning.
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Data networking
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MAC address (IEEE 802.3)
IPv4 (RFC 791)
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)
Transport Control Protocol (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
SIP channels support both User Datagram Protocol (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)
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Voice features
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SIP version 2
Dual-tone multifrequency (DTMF) tone detection and generation
Voice Activity Detection (VAD)
Comfort Noise Generation (CNG) compatible
Silence suppression
Call waiting, call waiting caller ID (FXS ports only)
Caller ID with name/ number
Caller ID blocking
Call forwarding: no answer, busy, all
Do not disturb
Call transfer, call return, call back on busy
Fax: G.711 pass-through or real-time fax over IP via T.38 fax relay
(T.38 support is dependent on fax machine and network/transport resilience)
Supports multiple voice codecs: G.711a, G.711u, G.726,G.729A, G.723.1
SIP over TLS
Three-way conference calling with local mixing
Per-call authentication and associated routing
Call blocking with toll restriction
Delayed disconnect
Distinctive ringing: calling and called number
Off-hook warning tone
Selective/anonymous call rejection
VoIP to PSTN (USA) service call origination and termination
PSTN (USA) to VoIP service call origination and termination
Forward calls to VoIP service: selective, authenticated, all
Forward calls to PSTN service: selective, authenticated, all
Automatic PSTN fallback (loss of power or IP service to unit, with quiescence to normal operations): fixed fallback pairing of FXS ports to FXO ports
Advanced inbound and outbound call routing
Independent configurable dial plans (1 per port)
Force PSTN disconnection
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FXO behavior features
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PSTN answer delay timer
PSTN-to-VoIP call max duration timer
VoIP-to PSTN call max duration timer
PSTN dialing delay timer
VoIP dialog refresh interval timer
PSTN ring time-out timer
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International control features
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FXO port impedance: configurable to 16 settings
Ring frequency: configurable
SPA to PSTN and PSTN to SPA gain settings
Ring frequency: maximum setting
Ring validation time setting
Tip/ring voltage adjustment setting
Ring indication delay setting
Operational loop current minimum value
Ring time-out setting
On-hook speed setting
Ringer impedance setting
Line-in-use voltage setting
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Security
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Password-protected system reset to factory default
Password-protected administrator and user access authority
Provisioning/configuration/authentication: HTTPS with factory-installed client certificate
HTTP digest-encrypted authentication via MD5 (RFC 1321)
Authentication: Extensible Authentication Protocol TLS (EAP-TLS), EAP Tunneled TLS (EAP-TTLS), and Protected EAP (PEAP)
SIP over TLS
Up to 256-bit Advanced Encryption Standard (AES) encryption
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Provisioning, administration, and maintenance
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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
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Physical interfaces
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4 RJ-11 FXS phone ports for analog circuit telephone device(s) (tip/ring)
4 RJ-11 FXO line ports for telco or PABX or KTS connection(s)
RJ-21 (50-pin telco connector) multiport voice connection
1 WAN 100BASE-T RJ-45 Ethernet port (IEEE 802.3)
1 AUX 100BASE-T RJ-45 Ethernet port (IEEE 802.3) for Maintenance
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Subscriber line interface circuit (SLIC)
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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: 18-20 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
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Regulatory compliance
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IEC 60950-1:2005, Second Edition, with all country deviations
AS/NZS 60950-1:2003, First Edition
CAN/CSA 22.2 No. 60950-1-05, Second Edition
UL 60950-1, Second Edition, 2005
EN55024
AS/NRZ 3548:1992 Class A
CFR 47 Part 15 Class A
EN55022 Class A
ICES-003, Issue 2, Class A, April 1997
Industry Canada CS-03
TIA-968-A, Addendum 1, 2, 3, 4, 5
TBR21: January 1998
Australia AS/ACIF S002: 2005
Australia AS/ACIF S003: 2008
New Zealand PTC220: 2008
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Power supply
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Switching type (100-240V) automatic
DC input voltage: 12V DC at 3.0A max.
Power adapter: 100-240V, 50-60 Hz AC input
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Indicator lights/LEDs
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Power, Ethernet, Voice Status, Phone 1 through 4, Line 1 through 4
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Documentation
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Quick Start Guide (printed in box)
Administration Guide
Provisioning Guide
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Environmental
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Dimensions
W x H x D
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6.69 x 1.54 x 8.66 in.
(170 x 39 x 220 mm)
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Weight
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2.85 lb (1.30 kg)
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Operating temperature
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32 to 113F (0 to 45C)
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Storage temperature
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-13 to 185F (-20 to 85C)
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Operating humidity
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10% to 90% noncondensing
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Storage humidity
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10% to 90% noncondensing
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Package Contents
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Cisco SPA8800 IP Telephony Gateway with 4 FXS and 4 FXO Ports
12V power adapter
RJ-45 Ethernet cable
RJ-11 telephone cable - qty 4
Quick Start Guide
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Product Warranty
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1-year limited hardware warranty with return to factory replacement and 90-day limited software warranty
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Table 2. Comparison of Cisco Small Business Voice Gateways and Analog Telephone Adapters
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Model
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Service Lines
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Active Calls
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3-Way Conference
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Public Switched Telephone Network (FXO) Connections
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Ethernet Ports
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Cisco PAP2T Internet Phone Adapter with 2 VoIP Ports
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2
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4
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2
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0
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1
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Cisco SPA2102 Phone Adapter with Router
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2
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4
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2
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0
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2
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Cisco SPA3102 Phone Adapter with Router
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2
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3
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1
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1
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2
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Cisco SPA8000 8-Port IP Telephony Gateway
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8
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16
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8
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0
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1
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Cisco SPA8800 IP Telephony Gateway with 4 FXS and 4 FXO Ports
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4
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12
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4
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4
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1
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Cisco WRP400 Wireless-G Broadband Router with 2 Phone Ports
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2
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4
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2
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0
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Mobile Phones
Apple iPhone
