Cisco SPA112 Analog Adapter (ATA) with 2 FXS

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The Cisco SPA112 is an intelligent low-density Voice over IP (VoIP) Analog Telephone Adapter (ATA) with 2 FXS and 1 10/100 WAN ports. The SPA112 enables carrier-class residential and business IP Telephony services, delivered over broadband or high-speed Internet connections to two standard RJ-11 telephones.  
Cisco SPA112 Key Features

• Enables high-quality VoIP service with a comprehensive feature set through a broadband Internet connection
• Provides high-quality, clear-sounding voice, using advanced voice quality-of-service (QoS) capabilities
• Supports reliable faxing with simultaneous voice and data use
• Includes two standard telephone ports, each with an independent phone number

The SPA112 ATA also supports T.38 fax and can be also be used to connect analog phones, paging systems, or other analog devices to VoIP systems or hosted VoIP solutions. The Cisco SPA112 is an ideal choice for home-offices and small business VoIP service offerings.  

Cisco SPA112 - Technical SpecificationsData Networking

• MAC address (IEEE 802.3) 
• IPv4 (RFC 791) upgradeable to IPv6 (RFC 1883) 
• Address Resolution Protocol (ARP) 
• Domain Name System (DNS) A record (RFC 1706) and SRV record (RFC 2782) 
• Dynamic Host Configuration Protocol (DHCP) client (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) (RFC 1890) 
• Real Time Control Protocol (RTCP) (RFC 1889) V
• LAN tagging (IEEE 802.1p) 
• Simple Network Time Protocol (SNTP) (RFC 2030) 
• SIP channels support for both UDP and TCP transport 

Voice Gateway

• SIPv2 (RFC 3261, 3262, 3263, and 3264) 
• SIP proxy redundancy: Dynamic through use of DNS SRV A records 
• Reregistration with primary SIP proxy server 
• SIP support in network address translation (NAT) networks (including Serial Tunnel [STUN]) 
• Highly secure (encrypted) calling using Secure RTP (SRTP) Codec name assignment 
• G.711 (A-law and µ -law) 
• G.726 (32 kbps) 
• G.729 A 
• Dynamic payload 
• Adjustable audio frames per packet 
• Dual-tone multifrequency (DTMF): In-band and out-of-band (RFC 2833) (SIP information) 

Voice Features

• Independent configurable dial plans with interdigit timers and IP dialing (1 per port) 
• Call progress tone generation 
• Jitter buffer: Adaptive 
• Frame loss concealment 
• Full-duplex audio 
• Echo cancellation (G.165 and G.168) 
• Voice activity detection (VAD) 
• Silence suppression 
• Comfort noise generation (CNG) 
• Attenuation and gain adjustments 
• Flash hook timer 
• Message waiting indicator (MWI) tones 
• Visual messaging waiting indicator (VMWI) using frequency shift keying (FSK) 
• Polarity control 
• Hook flash event signaling 
• Caller ID generation (name and number): Bellcore, DTMF, and European Telecommunications Standards Institute (ETSI)
• Streaming audio server: Up to 10 sessions 
• Music on hold 
• Call waiting, call waiting and caller ID
• Caller ID with name and number 
• Caller ID blocking 
• Selective and anonymous call rejection 
• Call forwarding: No answer, busy, and all 
• Do not disturb 
• Call transfer, call return, and call back on busy 
• Three-way conference calling with local mixing 
• Per-call authentication and associated routing 
• Call blocking with toll restriction 
• Distinctive ringing: Calling and called number 
• Off-hook warning tone 
• Advanced inbound and outbound call routing 
• Hotline and warmline calling 
• Long silence (configurable time setting) silence threshold 
• Disconnect tone (for example, reorder tone) 
• Configurable ring frequency 
• Ring validation time setting 
• Tip and ring voltage adjustment setting 
• Ring indication delay setting 

Fax Capability

• Fax tone detection pass-through 
• Fax pass-through using G.711 
• Real-time fax over IP using T.38 fax relay (T.38 support is dependent on fax machine and network and transport resilience) 

Security

• Password-protected system reset to factory default 
• Password-protected administrator and user access authority 
• Provisioning, configuration, and authentication 
• HTTPS with factory-installed client certificate 
• HTTP digest: Encrypted authentication using MD5 (RFC 1321) 
• Up to 256-bit Advanced Encryption Standard (AES) encryption 
• SIP Transport Layer Security (TLS) 

Provisioning, Administration, and Maintenance

• Web browser administration and configuration using integral web server 
• Telephone keypad configuration with interactive voice prompts 
• Automated provisioning and upgrade using HTTPS, HTTP, and Trivial File Transfer Protocol (TFTP) 
• TR-069 
• Asynchronous notification of upgrade availability using Notify 
• Nonintrusive, in-service upgrades 
• Report generation and event logging 
• Statistics in Bye message 
• Debug server records and syslog: Per-line configurable web browser 
• Ping and traceroute diagnostics