Data Networking

• MAC address (IEEE 802.3)
• IPv4 (RFC 791) upgradeable to IPv6 (RFC 1883)
• Address Resolution Protocol (ARP) D
• omain Name System (DNS) A record (RFC 1706) and SRV record (RFC 2782)
• Dynamic Host Configuration Protocol (DHCP) server and client (RFC 2131)
• DHCP client reservation
• DHCP Options 159 and 160
• 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)
• Differentiated Services (DiffServ) (RFC 2475) and 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
• QoS voice packet prioritisation over other packet types
• MAC address cloning
• Port forwarding
• 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

• 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

• QoS (Ethernet port upstream bandwidth control)
• 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
• Configuration management: Backup and restore

Physical interfaces

• 1 WAN 100BASE-T RJ-45 Ethernet Port (IEEE 802.3)
• 1 LAN 100BASE-T RJ-45 Ethernet Port (IEEE 802.3)
• 2 RJ-11 FXS phone ports for analog circuit telephone device (tip and ring) 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 voltage (tip and ring): –46 to –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, A-Tick certification, Restriction of Hazardous Substances (RoHS), and UL

Power Supply

• DC input voltage: 5V DC at 2.0A maximum
• Power consumption: 5W
• Switching type (100–240V) automatic
• Power adapter: 100–240V and 50–60 Hz (26–34 VA) AC input, with 1.8m cord

General

• Dimensions (W x H x D) 3.98 x 3.98 x 1.10 in. (101 x 101 x 28 mm)
• Unit weight 5.40 oz (153 g) Operating temperature 32 to 113ºF (0 to 45ºC)
• Storage temperature –77 to 158ºF (–25 to 70ºC)
• Operating humidity 10 to 90% noncondensing
• Storage humidity 10 to 90% noncondensing
• Package Contents:
  • Cisco SPA122 ATA with Router
  • 5V/2A power adapter
  • 6-ft (1.83m) Ethernet cable
  • Quick Start Guide
  • CD with documentation, including license and warranty