VoIP phone - with Trusted Platform Module (TPM) 2.0 with caller ID/call waiting - IEEE 802.11a/b/g/n/ac/ax (Wi-Fi) - SIP, SDP, RTCP, RTP, SRTP - carbon black
| Main Specifications | |
|---|---|
| Product Description | Cisco Wireless IP Phone 9821 - 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) |
| Cordless Phone Standard | IEEE 802.11a/b/g/n/ac/ax (Wi-Fi) |
| 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 |
| Speakerphone | Yes |
| Call Services | Call park/pickup, Call Waiting, Caller ID, Call Hold, Call Mute |
| Display | LCD display - color - Yes |
| Display Features | Adjustable brightness |
| Compatible Software | Cisco WebEx, Cisco Unified Communications Manager |
| Weight | 5.93 oz |
| Body Color | Carbon black |
| Manufacturer Warranty | 1-year warranty |
| General | |
| Product Type | VoIP phone |
| Compatible Platforms | Cisco BroadWorks, Cisco Webex Calling, Cisco Webex Dedicate Instance (DI) |
| Integrated Components | Trusted Platform Module (TPM) 2.0 |
| Weight | 5.93 oz |
| Body Color | Carbon black |
| Protection | IP54, dust protection, water-resistant, shock-resistant |
| Manufacturer Warranty | |
| Service & Support | Limited warranty - replacement - 1 year |
| Miscellaneous | |
| Connections | USB ¦ Headset / mini-phone 3.5 mm |
| Hearing Aid Compatible | Yes |
| Battery | |
| Capacity | 4060 mAh |
| Technology | Rechargeable - lithium ion |
| Talk Time | 690 min |
| Standby Time | 145 h |
| Display | |
| Type | LCD display - color |
| Display Location | Handset |
| Diagonal Size | 2.4" |
| Display Resolution | 320 x 240 pixels |
| Backlit | Yes |
| Display Languages | Arabic, Bulgarian, Catalan, Chinese, Taiwanese, Chinese (Traditional, Hong Kong), Croatian, Czech, Danish, Dutch, UK English, English (United States), Estonian, Finnish, French, French Canadian, German, Greek, Hebrew, Hungarian, Italian, Japanese, Korean, Latvian, Lithuanian, Norwegian, Polish, Brazilian Portuguese, Portuguese, Romanian, Russian, Serbian, Slovak, Slovenian, Spanish, Spanish (Latin American), Swedish, Thai, Turkish, Ukrainian, Welsh |
| Features | Adjustable brightness |
| Dimensions & Weight | |
| Width | 2.2 in |
| Depth | 0.7 in |
| Height | 5.2 in |
| Weight | 5.93 oz |
| Phone Features | |
| Cordless Phone Standard | IEEE 802.11a/b/g/n/ac/ax (Wi-Fi) |
| Call Services | Call park/pickup, Call Waiting, Caller ID, Call Hold, Call Mute |
| Caller ID Type | Caller ID/call waiting |
| Dialer Location | Handset |
| Conference Call Capability | Yes |
| Speakerphone | Yes |
| Volume Control | Yes |
| Indicators | Busy lamp field (BLF), message waiting indicator |
| Additional Functions | Noise reduction system, vibrating alert, auto answer, auto hang up, keypad lock, call recording, man down alarm, speed dial memory, Intercom, Music on hold, Push-to-Talk key, silent mode |
| 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 |
| Quality of Service | IEEE 802.1Q (VLAN) |
| IP Address Assignment | DHCP, static |
| Security | TLS 1.3, FIPS 140-2, EAP-FAST, WPA2, WPA3, PEAP-GTC, PEAP-MSCHAPv2, EAP-TLS, TKIP, MIC, AES, GCMP |
| Network Protocols | TLS, 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) |
| Compatible Software | Cisco WebEx, Cisco Unified Communications Manager |
| Internet of Things (IoT) | |
| Internet of Things (IoT) Compatible | Yes |
| Communications Technology | Bluetooth 5.4 |