Cisco SPA504G 4Line IP Phone

View the refurbished Cisco SPA504G 4-Line IP Phone data sheet here For business or home office use Full-featured 4-line business-class IP phone supporting Power over Ethernet (PoE) Monochrome backlit display for ease of use, aesthetics, and on-screen applications Connects directly to an Internet telephone service provider or to an IP private branch exchange (PBX) Dual switched Ethernet ports for connecting a computer behind the phone, reducing cabling costs Wideband audio for unsurpassed voice clarity and enhanced speaker quality Easy installation and highly secure remote provisioning, as well as menu-based and web-based configuration Supports up to two Cisco® SPA500S Expansion Module, adding up to 64 additional buttons* Supports both Session Initiation Protocol (SIP) and Smart Phone Control Protocol (SPCP) with the Cisco Unified Communications 500 Series for Small Business Comprehensive Interoperability and SIP-Based Feature Set Part of the Cisco Small Business Pro Series, the SIP-based Cisco SPA504G 4-Line IP Phone (Figure 1) has been tested to ensure comprehensive interoperability with equipment from voice over IP (VoIP) infrastructure leaders, enabling service providers to quickly roll out competitive, feature-rich services to their customers.   With hundreds of features and configurable service parameters, the Cisco SPA504G addresses the requirements of traditional business users while building on the advantages of IP telephony. Features such as easy station moves and shared line appearances (across local and geographically dispersed locations) are just some of the many advantages of the SPA504G.   The Cisco SPA504G 4-Line IP phone also supports productivity-enhancing features such as VoiceView Express and Cisco XML applications when used with the Cisco Unified Communications 500 Series in SPCP mode. Carrier-Grade Security, Provisioning, and Management The Cisco SPA504G uses standard encryption protocols to perform highly secure remote provisioning and unobtrusive in-service software upgrades. Remote provisioning tools include detailed performance measurement and troubleshooting features, enabling network providers to deliver high-quality support to their subscribers. Remote provisioning also saves service providers the time and expense of managing, preloading, and reconfiguring customer premises equipment.   Specifications Data networking • 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) • Internet Control Message Protocol (ICMP) (RFC 792) • TCP (RFC793) • User Datagram Protocol (UDP) (RFC 768) • Real-Time Transport 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 802.1p/Q: Layer 2 quality of service (QoS) • Simple Network Time Protocol (SNTP) (RFC 2030) Voice gateway • SIP version 2 (RFC 3261, 3262, 3263, 3264) • SPCP with the Cisco Unified Communications 500 Series • SIP proxy redundancy: dynamic via DNS SRV, A records • Reregistration with primary SIP proxy server • SIP support in NAT networks (including STUN) • SIPFrag (RFC 3420) • Secure (encrypted) calling via SRTP • Codec name assignment • Voice algorithms: • G.711 (A-law and μ-law) • G.726 (16/24/32/40 kbps) • G.729 A • G.722 • Dynamic payload support • Adjustable audio frames per packet • Dual-tone multifrequency (DTMF), in-band and out-of-band (RFC 2833) (SIP INFO) • Flexible dial plan support with interdigit timers • IP address/URI dialing support • Call progress tone generation • Jitter buffer: adaptive • Frame loss concealment • Comfort Noise Generation (CNG) • Voice activity detection (VAD) with silence suppression • Attenuation/gain adjustments • Message waiting indicator (MWI) tones • VMWI via NOTIFY, SUBSCRIBE • Caller ID support (name and number) • Third-party call control (RFC 3725) Provisioning, administration, and maintenance • Integrated web server provides web-based administration and configuration • Telephone keypad configuration via display menu/navigation • Automated provisioning and upgrade via HTTPS, HTTP, TFTP • Asynchronous notification of upgrade availability via NOTIFY • Nonintrusive in-service upgrades • Report generation and event logging • Statistics transmitted in BYE message • Syslog and debug server records: configurable per line Power supply • Power supply is optional and is purchased separately • Models: Cisco PA100-NA, PA100-EU, PA100-UK, PA100-AU • DC output voltage: +5 VDC at 2.0A maximum • Switching power adapter: 100-240V 50-60 Hz AC input Physical interfaces