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| Brand Name: | Cisco |
| Manufacturer Web Site: | http://www.cisco.com |
| Product Type: | IP Phone |
| Product Model: | 8841 |
| Display Size: | 5 inch |
| Display Type: | WVGA |
| Display Resolution: | 800 × 480 |
| Ringtone Type: | User-Adjustable |
| Signaling Protocol Support: | SIP |
| Switch Type: | 10/100/1000 BASE-T Ethernet |
| No. of Port: | 2 |
| PoE Supported: | Yes |
| Depth (mm): | 40.0 |
| Height (mm): | 229.1 |
| Width (mm): | 257.3 |
| Weight (Grams): | 1170.0 |
| Material: | Polycarbonate ABS Plastic |
| Security: | * Secure boot * Secure credential storage * Device authentication * Configuration file authentication and encryption * Image authentication * Random bit generation * Hardware cryptographic acceleration * Certificate Authority Proxy Function (CAPF) * Manufacturer-Installed Certificates (MIC) * Locally Significant Certificates (LSC) * Ethernet 802.1x supplicant options: Extensible Authentication Protocol-Flexible Authentication via Secure Tunneling (EAP-FAST) andExtensible Authentication Protocol-Transport Layer Security (EAP-TLS) * Signaling authentication and encryption using TLS * Media authentication and encryption using SRTP * HTTPS for client and server * Secure Shell (SSH) Protocol server * SSL-based VPN client |
| Network Features: | * Session Initiation Protocol (SIP) for signaling * Session Description Protocol (SDP) * IPv4 and IPv6 * User Datagram Protocol (UDP) (used only for Real-Time Transport Protocol [RTP] streams) * Dynamic Host Configuration Protocol (DHCP) client or static configuration * Gratuitous Address Resolution Protocol (GARP) * Domain Name System (DNS) * Trivial File Transfer Protocol (TFTP) * Secure Hypertext Transfer Protocol (HTTPS) * VLAN * Real-Time Transport Protocol (RTP) * Real-Time Control Protocol (RTCP) * Cisco Peer-to-Peer Distribution Protocol (PPDP) * Cisco Discovery Protocol * LLDP (including LLDP-MED) * Switch speed auto-negotiation |
| Voice Features: | * Visual voice mail * encrypted voice communications |
| Operating Temperature: | 0 to 40 °C |
| Other Features: | * Dual-position foot stand * Wall-mountable * Physical security - The phone is compatible with the Kensington Security Slot (K-Slot) antitheft system. * Auto-answer * Call history lists * Call forward * Conference, including traditional Join feature * Cross Cluster Extension Mobility (EMCC) * Direct transfer * Extension mobility * Fast-dial service * Forced access codes and client matter codes * Group call pickup *Silent monitoring and recording *Speed dial |
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