Điện thoại IP Phone Snom 821

Điện thoại IP Phone Snom 821

• Hỗ trợ 12 tài khoản SIP
• Màn hình màu TFT, độ phân giải cao
• Nhận diện người gọi trên màn hình.
• 250 thu mục xuất/nhập dể dàng
• 1 x LAN, 1 x PC: RJ45 (Ethernet)
• Nguồn 5V DC
• Giao thức mạng: 2 x IEEE 802.3 10/100 Mbps Switch.
• Xử lý lên đến 12 cuộc gọi đồng thời, chặn cuộc gọi, từ chối danh sách....
• Codecs, Audio, SIP, Web sever, PoE IEEE 802.3af, Class 2
• Thiết bị cầm tay kết nối RJ-4P4C
• Tai nghe kết nối RJ-4P4C
• USB 2.0

Snom 821 IP Phone

The Snom 821 IP Phone represents a superior line of business VoIP phones. It unites two of the biggest requirements of modern telephony in one device: extraordinary VoIP technology and a slick design. Thesnom 821 comes with an integrated 1 Gigabit switch on board, enabling connected devices to benefit from all modern network installations. 

Note: Please select the colour of your Snom 821 IP Phone(s) at the top of the page. It is available in both black and white.

Snom 821 IP Phone Key Features

• High-resolution TFT color display
• Integrated 1 Gigabit switch
• Large call indication LED
• 37 keys, 9 LEDs
• Local 5-way-conference
• 4 freely programmable and 16 customizable function keys

Display and Wideband Technology With its large high-resolution TFT color display (8.9 cm (3.5 inch), 320 x 240 pixels) the Snom 821 IP Phone offers a brilliant depiction of call lists, phone directories, and caller information via the integrated XML browser. The wideband technology used in the handset captures more than double the frequency spectrum that a standard handset does, making the audio quality comparable to FM radio. On speakerphone a Class D amplifier reliably suppresses interference noise. WLAN and Security The Snom 821 IP Phone's WLAN gives you complete freedom in selecting the environment of your choice. Whichever option you prefer, the Snom 821 IP Phone is prepared for any and all scenarios; Power via adapter plus WLAN or Power-over-Ethernet (PoE). Moreover, the Snom 821 IP Phone offers all conveniences Snom customers have come to expect. As security is one of the most important concerns of our time, this topic has always been a priority for Snom. Therefore important security features like secure VPN, TLS and SRTP are an integral part of the 821's firmware. The continuing goal is to ensure that the customers' data is protected effectively from any unauthorised accessing. Conference and Interface Snom's 821 VoIP Phone also offers a wide range of functions that are a necessity these days and highly valued particularly by business customers. 5-way conferencing, multiple ringtones, and up to twelve different SIP identities are a few examples for the numerous business functionalities provided. The Snom 821 IP Phone allows our customers to operate completely indepently of their current environment - anytime, anyplace. The phone user interface is designed to be operated intuitively. The keys are positioned so as to be easily seen and used from any angle, regardless of whether the Snom 821 IP Phone is set up with the footstand in the high or low position. The Snom 821 IP Phone gives the discerning user comfortable access to numerous business functions that have become matter of course in today’s telephony. Note: The Snom 821 IP Phone is interoperable with Windows OCS. Please see the following links: How to Configure Snom OCS Main Features of Snom OCS Advantages of Snom OCS Snom 821 VoIP Phone Technical Specifications General Features Weight: with footstand approx. 900g, without footstand approx. 670g Certifications: FCC Class B, CE Mark Power consumption: 4-7 Watts (without USB peripherals) 1 x LAN, 1 x PC: RJ45 (Ethernet) Power 5V DC Ethernet: 2 x IEEE 802.3/1 Gigabit Switch Power over Ethernet: IEEE 802.3af, Class 2 Handset: RJ-4P4C connector Headset: RJ-4P4C connector 1 x USB Type A, 1 x Type B Available in black and white User Interface High-resolution TFT color display 3.5”, 320 x 240 pixels 37 keys, 9 LEDs 4 freely programmable and 16 customizable function keys 12 virtual keys Comfortable and intuitive menu structure Incoming call indication via LED Caller identification on display LED indication for missed calls and new messages Directory (up to 1000 entries) Import/export of directory Speed dial Local dial plan Lists of missed, received and dialed calls (250 entries each) Indication of calls on hold Clock with automatic daylight-saving time, call duration Call blocking (deny list) Blocking of anonymous calls Handling of up to 12 calls simultaneously Auto answer mode Ringtone selection, VIP ringtones, import of individual ringtones URL dialing support Multiple language support DND mode (do not disturb) Speakerphone (full duplex) Keyboard lock Additional Functions Extremely easy WLAN connection via USB Hold Unattended and attended transfer Music on hold (if supported by PBX) Call forwarding 5-way conferencing (bridge on phone) Call park, call pickup (if supported by PBX) Call completion on busy/not available Client Matter Code (CMC) Call waiting/switching between calls Automatic Redial RTP multicast paging Multiple audio device support (i.e. Bluetooth) Unified Communications with Snom CTI and Snom OCS edition Web Server Built in HTTP/HTTPS web server Remote configuration/provisioning Dial from web interface or Snom CTI Password protection Diagnostics (tracing, logging, syslog) Security, Quality of Service HTTPS (server/client) Transport Layer Security (TLS) SRTP (RFC 3711), SIPS, RTCP, VLAN (IEEE 802.1X) LLDP-MED Codecs, Audio Wideband audio G.711 a-law, µ-law G.722, G.723.1, G.726, G.729AB, GSM FR Comfort noise generation (CNG) Voice activity detection (VAD) SIP RFC 3261 compliant UDP, TCP, and TLS Digest/basic authentication Loose routing and strict routing PRACK (RFC 3262) Error information support Reliability of provisional responses (RFC 3262) Early media support DNS SRV (RFC 3263), redundant server support Offer/Answer (RFC 3264) Message Waiting Indication (RFC 3842), subscription for MWI events (RFC 3265) Dialog-state monitoring (RFC 4235) In-band/out-of-band/SIP INFO DTMF STUN client (NAT traversal) NAPTR, (RFC 2915), rport (RFC 3581), REFER (RFC 3515) Event list subscription support (RFC 4662) Bridged line appearance (BLA) Auto provisioning with PnP Presence/Buddy-list feature Busy lamp field support (BLF) Presence publishing Installation Automatic software updates Automatic settings retrieval via HTTP/HTTPS/TFTP Configuration via web interface Static IP, DHCP NTP

Snom 821 VoIP Phone Technical Specifications

General Features

• Weight: with footstand approx. 900g, without footstand approx. 670g
• Certifications: FCC Class B, CE Mark
• Power consumption: 4-7 Watts (without USB peripherals)
• 1 x LAN, 1 x PC: RJ45 (Ethernet)
• Power 5V DC
• Ethernet: 2 x IEEE 802.3/1 Gigabit Switch
• Power over Ethernet: IEEE 802.3af, Class 2
• Handset: RJ-4P4C connector
• Headset: RJ-4P4C connector
• 1 x USB Type A, 1 x Type B
• Available in black and white

User Interface

• High-resolution TFT color display
• 3.5”, 320 x 240 pixels
• 37 keys, 9 LEDs
• 4 freely programmable and 16 customizable function keys
• 12 virtual keys
• Comfortable and intuitive menu structure
• Incoming call indication via LED
• Caller identification on display
• LED indication for missed calls and new messages
• Directory (up to 1000 entries)
• Import/export of directory
• Speed dial
• Local dial plan
• Lists of missed, received and dialed calls (250 entries each)
• Indication of calls on hold
• Clock with automatic daylight-saving time, call duration
• Call blocking (deny list)
• Blocking of anonymous calls
• Handling of up to 12 calls simultaneously
• Auto answer mode
• Ringtone selection, VIP ringtones, import of individual ringtones
• URL dialing support
• Multiple language support
• DND mode (do not disturb)
• Speakerphone (full duplex)
• Keyboard lock

Additional Functions

• Extremely easy WLAN connection via USB
• Hold
• Unattended and attended transfer
• Music on hold (if supported by PBX)
• Call forwarding
• 5-way conferencing (bridge on phone)
• Call park, call pickup (if supported by PBX)
• Call completion on busy/not available
• Client Matter Code (CMC)
• Call waiting/switching between calls
• Automatic Redial
• RTP multicast paging
• Multiple audio device support (i.e. Bluetooth)
• Unified Communications with Snom CTI and Snom OCS edition

Web Server

• Built in HTTP/HTTPS web server
• Remote configuration/provisioning
• Dial from web interface or Snom CTI
• Password protection
• Diagnostics (tracing, logging, syslog)

Security, Quality of Service

• HTTPS (server/client)
• Transport Layer Security (TLS)
• SRTP (RFC 3711), SIPS, RTCP, VLAN (IEEE 802.1X)
• LLDP-MED

Codecs, Audio

• Wideband audio
• G.711 a-law, µ-law
• G.722, G.723.1, G.726, G.729AB, GSM FR
• Comfort noise generation (CNG)
• Voice activity detection (VAD)

SIP

• RFC 3261 compliant
• UDP, TCP, and TLS
• Digest/basic authentication
• Loose routing and strict routing
• PRACK (RFC 3262)
• Error information support
• Reliability of provisional responses (RFC 3262)
• Early media support
• DNS SRV (RFC 3263), redundant server support
• Offer/Answer (RFC 3264)
• Message Waiting Indication (RFC 3842), subscription for MWI events (RFC 3265)
• Dialog-state monitoring (RFC 4235)
• In-band/out-of-band/SIP INFO DTMF
• STUN client (NAT traversal)
• NAPTR, (RFC 2915), rport (RFC 3581), REFER (RFC 3515)
• Event list subscription support (RFC 4662)
• Bridged line appearance (BLA)
• Auto provisioning with PnP
• Presence/Buddy-list feature
• Busy lamp field support (BLF)
• Presence publishing

Installation

• Automatic software updates
• Automatic settings retrieval via HTTP/HTTPS/TFTP
• Configuration via web interface
• Static IP, DHCP
• NTP