* Media encryption using Secure Real-Time Transfer Protocol (SRTP) * Signaling encryption using Transport Layer Security (TLS) Protocol * Encrypted configuration files
Network Features:
* Cisco Discovery Protocol and Link Layer Discovery Protocol for Media Endpoint Devices (LLDP-MED) * Dynamic network parameters provisioned through Dynamic Host Configuration Protocol (DHCP) * Static network parameters provisioned through Embedded interactive-voice-response (IVR) system
Voice Features:
* Comfort-noise generation and voice-activity-detection (VAD) programming is supported on a system basis.
Operating Temperature:
0 to 40 °C
Other Features:
* Cisco Unified IP Phone 6901, Arctic White, Standard Handset * Memory - 8-MB flash memory; 32-MB synchronous dynamic RAM (SDRAM) * Calling features : - Adjustable ringing and volume levels - Auto-barge - Call waiting - Conference - Hold - Message-waiting indicator - Music on hold - Redial - Shared line - Transfer