Cisco IP Phone 7821
VoIP phone | SIP, SRTP | 2 lines
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Main Specification
| Product Description | Cisco IP Phone 7821 - VoIP phone |
|---|---|
| Product Type | VoIP phone |
| Compatible Platforms | Cisco Business Edition 6000 |
| Main Features | Multiple VoIP protocol support, integrated Ethernet switch |
| VoIP Protocols | SIP, SRTP |
| Voice Codecs | G.722, G.729ab, G.711u, G.711a, iLBC |
| Lines Supported | 2 lines |
| Speakerphone | Yes (digital duplex) |
| Call Services | Voice Mail, Caller ID, Call Waiting, Call Forwarding, Call Transfer, Call Hold, Message Waiting Capability |
| Display | LCD display - monochrome - Yes |
| Network Ports Qty | 2 x Ethernet 10Base-T/100Base-TX |
| Compatible Software | Cisco Unified Communications Manager 8.5.1 or later, Cisco Hosted Collaboration Solution |
| Manufacturer Warranty | 1-year warranty |
General
| Product Type | VoIP phone |
|---|---|
| Compatible Platforms | Cisco Business Edition 6000 |
| Body Material | PC/ABS |
Phone Features
| Call Services | Voice Mail, Caller ID, Call Waiting, Call Forwarding, Call Transfer, Call Hold, Message Waiting Capability |
|---|---|
| Dialer Type | Keypad |
| Dialer Location | Base |
| Conference Call Capability | Yes |
| Speakerphone | Yes (digital duplex) |
| Menu Operation | Yes |
| Programmable Buttons Qty | 2 |
| Indicators | Voice message waiting indicator, speakerphone indicator, headset |
| Firmware Upgradable | Yes |
| Additional Functions | Call timer |
| Additional Features | Music on hold |
IP Telephony
| Main Features | Multiple VoIP protocol support, integrated Ethernet switch |
|---|---|
| VoIP | Yes |
| VoIP Protocols | SIP, SRTP |
| Voice Codecs | G.722, G.729ab, G.711u, G.711a, iLBC |
| Lines Supported | 2 lines |
| Quality of Service | IEEE 802.1Q (VLAN), IEEE 802.1p |
| IP Address Assignment | DHCP, static |
| Security | IEEE 802.1X |
| Power Over Ethernet (PoE) Support | Yes |
| Network Protocols | Cisco Discovery Protocol (CDP), SRTP |
| Network Ports Qty | 2 x Ethernet 10Base-T/100Base-TX |
| Compatible Software | Cisco Unified Communications Manager 8.5.1 or later, Cisco Hosted Collaboration Solution |
| Network Features | Lightweight Directory Access Protocol (LDAP) |
Display
| Type | LCD display - monochrome |
|---|---|
| Display Location | Base |
| Diagonal Size | 3.5" |
| Display Resolution | 396 x 162 pixels |
| Backlit | Yes |
| Display Languages | Danish, Hebrew, Hungarian, Czech, Croatian, Slovenian, Thai, Slovak, Brazilian Portuguese, English, German, French, Italian, Norwegian, Portuguese, Polish, Finnish, Swedish, Russian, Spanish, Dutch, Greek, Turkish, Arabic, Bulgarian, Latvian, Lithuanian, Estonian, Serbian, Romanian, Catalan, Japanese, Chinese, Korean |
Miscellaneous
| Connections | Headset jack |
|---|---|
| Placing / Mounting | Wall-mountable, table-top |
| Compliant Standards | CISPR 22 Class B, CISPR 24, EN 61000-3-2, EN 61000-3-3, EN55024, EN55022 Class B, ICES-003 Class B, AS/ACIF S004, FCC Part 68, EMC, CS-03, UL 60950-1 Second Edition, EN 60601-1-2, FCC CFR47 Part 15 B, GB 4943, AS/NZS 60950, CSA C22.2 No. 60950-1 Second Edition, EN 60950-1 Second Edition, IEC 60950-1 Second Edition, VCCI Class B |
Dimensions & Weight (Base)
| Width | 20.6 cm |
|---|---|
| Depth | 2.8 cm |
| Height | 20.7 cm |
| Weight | 867 g |
Manufacturer Warranty
| Service & Support | Limited warranty - replacement - 1 year |
|---|
Product features
TWO LINES
Ideal for occasional-to-light voice communications needs of knowledge workers and managersFIXED FUNCTION KEYS
One-touch access to service, messaging, directory, hold/resume, transfer and conference featuresFULLY PROGRAMMABLE
Set up line keys to support either lines, such as directory numbers, or call features like speed diallingOPTIMAL PERFORMANCE
Class 1 PoE with 10/100BASE-T Ethernet connection through two RJ45 portsPEACE OF MIND
1-year limited hardware warrantyKey selling points
- Dedicated fixed keys for common functions such as conference, messaging, and directory, and a two-way navigation button
- Full wideband audio performance throughout the handset, headset, and speakerphone for superior clarity
- Electronic hookswitch control for added flexibility in managing personal calls when using third-party headsets
- Power over Ethernet (PoE) Class 1 endpoint and Cisco EnergyWise to reduce your energy costs and carbon footprint
- Enhanced customization with a field-replaceable bezel option
- Integrated IEEE 10/100 switch to support traffic from a co-located PC for reduced cable infrastructure costs
- A wall-mount option for common areas such as aisles or hallways, or where desk space is limited
References
MPN: CP-7821-K9=
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04/06/2026 03:37:10