VoIP phone - with Trusted Platform Module (TPM) 2.0 with caller ID/call waiting - SIP, SDP, RTCP, RTP, SRTP - 46 lines - first light
| Main Specifications | |
|---|---|
| Product Description | Cisco Desk Phone 9851 - VoIP phone - with Trusted Platform Module (TPM) 2.0 with caller ID/call waiting |
| Product Type | VoIP phone - with Trusted Platform Module (TPM) 2.0 with caller ID/call waiting |
| Compatible Platforms | Cisco BroadWorks, Cisco Webex Calling, Cisco Webex Dedicate Instance (DI), Asterisk |
| Main Features | Integrated Ethernet switch |
| VoIP Protocols | SIP, SDP, RTCP, RTP, SRTP |
| Voice Codecs | Opus, G.722, G.722.2, iSAC, G.711a-law, G.711?-law, G.729a, G.729b, iLBC |
| Lines Supported | 46 lines |
| Speakerphone | Yes |
| Call Services | Voice Mail, Caller ID, Call Waiting, Call Hold, Call Transfer, Call Forwarding, Call park/pickup |
| Display | LCD display - color - Yes |
| Network Ports Qty | 2 x Ethernet 10Base-T/100Base-TX/1000Base-T |
| Compatible Software | Cisco WebEx, Cisco Unified Communications Manager |
| Weight | 34.14 oz |
| Body Color | First light |
| Environmental Standards | ENERGY STAR Qualified |
| Manufacturer Warranty | 1-year warranty |
| General | |
| Product Type | VoIP phone |
| Compatible Platforms | Cisco BroadWorks, Cisco Webex Calling, Cisco Webex Dedicate Instance (DI), Asterisk |
| Integrated Components | Trusted Platform Module (TPM) 2.0 |
| Weight | 34.14 oz |
| Body Color | First light |
| Body Material | ABS polycarbonate, 74% post-consumer recycled plastic |
| Manufacturer Warranty | |
| Service & Support | Limited warranty - replacement - 1 year |
| Miscellaneous | |
| Connections | Headset jack / RJ-9 ¦ 2 x network / RJ-45 ¦ USB / 4 pin USB Type A ¦ USB Type-C / 24 pin USB-C |
| Hearing Aid Compatible | Yes |
| Placing / Mounting | Desktop |
| Cables Included | Network cable |
| Power | |
| Power Consumption | 2.82 W (power adapter, display off mode), 2.69 W (PoE, display off mode), 0.24 W (power adapter, deep sleep mode), 0.69 W (PoE, deep sleep mode) |
| Display | |
| Type | LCD display - color |
| Display Location | Base |
| Diagonal Size | 3.7" |
| Display Resolution | 240 x 480 pixels |
| Backlit | Yes |
| Display Languages | Brazilian Portuguese, Catalan, Czech, Danish, Dutch, Finnish, French, French Canadian, German, Greek, Hungarian, Italian, Japanese, Korean, Norwegian, Polish, Portuguese, Russian, Spanish, Swedish, Turkish, Ukrainian, Chinese (simplified), Chinese (traditional), Chinese (Traditional, Hong Kong), Spanish (Columbia), UK English, US English |
| Dimensions & Weight | |
| Width | 8.9 in |
| Depth | 8.4 in |
| Height | 1.9 in |
| Weight | 34.14 oz |
| Phone Features | |
| Wireless Interface Provided | NFC |
| Call Services | Voice Mail, Caller ID, Call Waiting, Call Hold, Call Transfer, Call Forwarding, Call park/pickup |
| Caller ID Type | Caller ID/call waiting |
| Dialer Location | Base |
| Conference Call Capability | Yes |
| Speakerphone | Yes |
| Programmable Buttons Qty | 6 |
| Volume Control | Yes |
| Indicators | Speakerphone indicator, headset, mute indicator, calendar indicator, select indicator, line status indicator, status, busy lamp field (BLF) |
| Additional Functions | One button to join (OBTJ), QR code access, conference mode, mute, Music on hold, Do not disturb, call recording, sleep mode, Kensington security slot |
| IP Telephony | |
| Main Features | Integrated Ethernet switch |
| VoIP | Yes |
| VoIP Protocols | SIP, SDP, RTCP, RTP, SRTP |
| Voice Codecs | Opus, G.722, G.722.2, iSAC, G.711a-law, G.711?-law, G.729a, G.729b, iLBC |
| Lines Supported | 46 lines |
| Quality of Service | IEEE 802.1Q (VLAN) |
| IP Address Assignment | DHCP, static |
| Security | IEEE 802.1X, EAP-FAST, EAP-TLS, FIPS 140-2, TLS 1.3, SRTP |
| Power Over Ethernet (PoE) Support | Yes |
| Network Protocols | IPv4, IPv6, DHCP, GARP, DNS, TFTP, HTTPS, VLAN, RTP, RTCP, Cisco Discovery Protocol (CDP), Link Layer Discovery Protocol (LLDP), Link Layer Discovery Protocol - Media Endpoint Discovery (LLDP-MED) |
| Network Ports Qty | 2 x Ethernet 10Base-T/100Base-TX/1000Base-T |
| Compatible Software | Cisco WebEx, Cisco Unified Communications Manager |
| Voice Features | Acoustic echo cancellation (AEC), forward error correction (FEC), automatic gain control (AGC), comfort noise generation (CNG), voice activity detection (VAD), packet loss concealment (PLC), silence suppression, acoustic shock protection, adaptive jitter buffer (AJB), dual tone multi-frequency (DTMF), HD audio, ultrasonic support |
| Network Features | Class 3 PoE |
| Environmental Standards | |
| ENERGY STAR Certified | Yes |