Description
Several
| License Details | User Connection License |
Description of the Food
| Input Voltage | 48 V DC |
| 48 V DC |
Interfaces/Ports
| Network Port Number (RJ-45) | 2 |
| Network (RJ-45) | Yeah |
| PoE port (RJ-45) | Yeah |
Display and graphics
| Screen Color | Monochrome |
| Screen Resolution | 396 x 162 |
| Screen Size | 8.9cm (3.5") |
| Backlight | Yeah |
Technical Information
| Speakerphone | Yeah |
| Voice codec | iLBC |
| G.729ab | |
| G.722 | |
| G.711a | |
| G.711u | |
| Characteristics | Multilingual Menu |
| Speed dial | |
| Call Waiting | |
| Indicator | |
| Do not disturb function | |
| Day and time | |
| Voicemail | |
| Auto Response | |
| Multiple melodies | |
| Distinctive sound | |
| Call log | |
| Call forwarding | |
| Music on hold | |
| IP Phone Technology | VoIP |
| Total number of telephone lines | 2 |
| Caller ID | Yeah |
| Base Unit Connectivity Technology | With cable |
Management and protocols
| Communications Protocols | CDP |
| LDAP | |
| SRTP | |
| SIP | |
| Quality of Service (QoS) | 802.1p/q |
Physical characteristics
| Weight (Approximate) | 867g |
| Format | Wall mounting |
| Height | 207mm |
| Width | 206mm |
| Depth | 28mm |
| Product color | Coal |
General Information
| Product Type | IP Phone |
| Manufacturer Code | CP-7821-K9= |
| Manufacturer Web Address | http://www.cisco.com |
| Manufacturer | Cisco Systems, Inc |
| Product Model | 7821 |
| Product Name | IP Phone - 7821 |
| Product Range | 7800 |
| Brand Name | Cisco |
Controls/Indicators
| Type of Buttons and Keys | Volume Control |
| Hold Button | |
| Navigation | |
| Service | |
| Silence | |
| Transfer/Conference | |
| Headphones | |
| Directory | |
| Warning message | |
| Speaker |
