Cisco SPA504G

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Telefon IP , Da , Da , Da , Da , 128 x 64 monochrome LCD graphical display with backlight , Caller ID support (name and number)Third-party call control (RFC 3725)Integrated web server provides web-based administration and configuration , Internet Control Message Protocol (ICMP) (RFC 792)TCP (RFC 793)User Datagram Protocol (UDP) (RFC 768)Real-Time Transport Protocol (RTP) (RFC 1889, 1890)Real-Time Control Protocol (RTCP) (RFC 1889) , Jitter buffer: adaptive Frame loss concealmentComfort Noise Generation (CNG)Voice activity detection (VAD) with silence suppressionAttenuation/gain adjustmentsVMWI - Voicemail Waiting Indicator, via NOTIFY, SUBSCRIBE , Telephone keypad configuration via display menu/navigationAutomated provisioning and upgrade via HTTPS, HTTP, TFTPAsynchronous notification of upgrade availability via NOTIFYNonintrusive in-service upgrades , 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) , Adjustable audio frames per packetDual-tone multifrequency (DTMF), in-band and out-of-band (RFC 2833) (SIP INFO)Flexible dial plan support with interdigit timersIP address/URI dialing supportCall progress tone generation , Report generation and event loggingStatistics transmitted in BYE messageSyslog and debug server records: configurable per line , SPCP with the Cisco Unified Communications 500 SeriesSIP proxy redundancy: dynamic via DNS SRV, A recordsReregistration with primary SIP proxy serverSIP support in NAT networks (including STUN)SIPFrag (RFC 3420) , Secure (encrypted) calling via SRTPCodec name assignmentVoice algorithms:G. 711;G. 726;G. 729 A;G. 722Dynamic payload support , 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)SIP version 2 (RFC 3261, 3262, 3263, 3264) , Automated remote provisioning, multiple methods; up to 256-bit encryption (HTTP, HTTPS, Trivial File Transfer Protocol [TFTP])Option to require administrator password to reset unit to factory defaults , Call forwarding: unconditional, no answer, on busyHot line and warm line automatic callingCall logs (60 entries each): made, answered, and missed callsRedial from call logsPersonal directory with auto-dial (100 entries) , Highly secure call encrypted voice communications supportBuilt-in web server for administration and configuration with multiple security levels , Call waitingCaller ID name and numberOutbound caller ID blockingCall transfer: attended and blindThree-way call conferencing with local mixingMultiparty conferencing via external conference bridge , Do not disturbDigits dialed with number auto-completionAnonymous caller blockingUniform Resource Identifier (URI) (IP) dialing support (vanity numbers)On-hook default audio configuration (speakerphone and headset) , 10 user-downloadable ring tonesSpeed dialing, eight entriesConfigurable dial/numbering plan supportIntercomGroup paging , Multiple ring tonesCalled number with directory name matchingAbility to call number using name: directory matching or via caller IDSubsequent incoming calls show calling name and number , Network Address Translation (NAT) Traversal, including Simple Traversal of UDP Through NATs (STUN) supportDNS SRV and multiple A records for proxy lookup and proxy redundancySyslog, debug, report generation, and event logging , Four voice lines4 SIP registrationLine status: active line indication, with name and numberMenu-driven user interfaceShared line appearanceSpeakerphoneCall holdMusic on hold , Automatic redial of last calling and last called numbersOn-hook dialingCall pickup: selective and groupCall park and unparkCall swapCall back on busyCall blocking: anonymous and selective , Date and time with support for intelligent daylight savingsCall start time stored in call logsCall timerName and identity (text) displayed at startupDistinctive ringing based on calling and called number , 214 x 212 x 44 mm , 0.9 kg , Volume control rocking up/down knob controls handset, headset, speaker, ringerStandard 12-button dialing padHigh-quality handset and cradleBuilt-in high-quality microphone and speaker , Headset jack: 2.5 mmLED test functionTwo Ethernet ports with integrated Ethernet switch: 10/100BASE-T RJ-45802.3af-compliant PoEOptional 5 VDC universal (100-240V) switching , 4-way rocking directional knob for menu navigationVoicemail message waiting indicator (VMWI) lightVoicemail message retrieval buttonDedicated hold buttonSettings button for access to feature, setup, and configuration menus , Pixel-based display: 128 x 64 monochrome LCD graphical display with backlightDedicated illuminated buttons for:Audio mute on/off;Headset on/off;Speakerphone on/off - spa504g
Denumiri similare la Telefon VOIP Cisco SPA504G: SPA 504 G, SPA 504G, SPA504 G

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