3 Line IP Phone with Display and PC Port , 100 entries , • 10 user-downloadable ring tones , Da , Da , Da , Pixel-based display: 128 x 64 monochrome LCD graphical display , • DNS: A record (RFC 1706), SRV record (RFC 2782) , • SIP support in NAT networks (including STUN) , • Message waiting indicator (MWI) tones , • SPCP with the Cisco Unified Communications 500 Series , • Frame loss concealment , Data networking : • MAC address (IEEE 802.3) , • VLAN tagging 802.1p/Q: Layer 2 quality of service (QoS) , • IP address/URI dialing support , • Statistics transmitted in BYE message , • Real Time Control Protocol - Extended Report (RFC 3611) , • Adjustable audio frames per packet , • Asynchronous notification of upgrade availability via NOTIFY , • User Datagram Protocol (UDP) (RFC 768) , • Codec name assignment , • Dynamic Host Configuration Protocol (DHCP) client (RFC 2131) , • SIPFrag (RFC 3420) , • Voicemail waiting indicator (VMWI), via NOTIFY, SUBSCRIBE , • SIP proxy redundancy: dynamic via DNS SRV, A records , • Voice activity detection (VAD) with silence suppression , • IPv4 (RFC 791) , • Simple Network Time Protocol (SNTP) (RFC 2030) , • Call progress tone generation , • RTCP-XR , • Differentiated Services (DiffServ) (RFC 2475) , • Dual-tone multifrequency (DTMF), in-band and out-of-band (RFC 2833) (SIP INFO) , • Nonintrusive in-service upgrades , • Real Time Protocol (RTP) (RFC 1889, 1890) , • Voice algorithms: G. 711 (A-law and μ-law)G. 726 (16/24/32/40 kbps)G. 729 ABG. 722 , Provisioning, administration, and maintenance :• Integrated web server provides web-based administration and configuration , • Internet Control Message Protocol (ICMP) (RFC 792) , • Highly secure (encrypted) calling via Secure Real-Time Transport Protocol (SRTP) , • Caller ID support (name and number) , • Re-registration with primary SIP proxy server , • Attenuation/gain adjustments , • Address Resolution Protocol (ARP) , Voice gateway : • SIP version 2 (RFC 3261, 3262, 3263, 3264) , • Jitter buffer: adaptive , • Syslog and debug server records: configurable per line , • Type of service (ToS) (RFC 791, 1349) , • Flexible dial plan support with interdigit timers , • Report generation and event logging , • Real Time Control Protocol (RTCP) (RFC 1889) , • Dynamic payload support , • Automated provisioning and upgrade via TFTP, HTTP or HTTPS , • TCP (RFC 793) , • SIP/TLS , • Third-party call control (RFC 3725) , 194 x 97 x 45 mm , 0.7711 kg , Power supply : • Switching type (100-240V) automatic• DC input voltage: +5 VDC at 1.0A maximum , Voice Lines :3Ethernet Ports 2High-Resolution Graphical Display , Physical interfaces : • 2 10/100BASE-T RJ-45 Ethernet port (IEEE 802.3)• Handset: RJ-9 connector - spa303-g3


Denumiri similare la Telefon VOIP Cisco SPA303-G3: SPA 303 G 3, SPA303G3, SPA303 G3, SPA 303-G3, SPA 30 3-G 3

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