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General| Resolution | 480 x 272 pixels |
|---|---|
| Local Phonebook | Up to 1000 entries |
| SIP Accounts | Up to 16 |
| Weight | 1.2 kg |
| Operating Humidity | 10% to 90% (non-condensing) |
| Display | 4.3 inch color display |
| Voice Codecs | G.722, G.711 (A/μ), G.726, G.729, iLBC, OPUS |
| Ethernet | Dual-port 10/100/1000 Mbps |
| USB | USB 2.0 |
| Bluetooth | Yes |
| Wi-Fi | Yes, via USB Dongle |
| Headset Port | 3.5mm |
| PoE | Yes |
| Call Features | Call Hold, Call Waiting, Call Transfer, Call Forward |
| Supported Protocols | SIP |
| Operating Temperature | 0 to 40 °C |
Defines the necessary conditions for IP phones to function as SIP endpoints in a network deployment.
Explains how Yealink IP phones connect to a network and handle data transmission using Ethernet.
Outlines the steps an IP phone takes to establish network connectivity and begin operation upon startup.
Details the procedures to confirm the IP phone has started correctly and is ready for use.
Covers the configuration of IPv4, IPv6, and dual-stack addressing modes for IP phones.
Details how to connect Yealink IP phones to a wireless network, including scanning and priority settings.
Explains how to use OpenVPN for VPN feature to prevent disclosure of private information and secure connections.
Covers the support for various protocols for 802.1X authentication on Yealink IP phones.
Explains how to register accounts for receiving incoming or initiating outgoing calls on IP phones.
Details server redundancy options like Failover and Fallback for ensuring continuity of phone service.
Describes configuring SIP server name resolution using DNS queries and static DNS cache.
Explains how to access call history information via web or phone user interface.
Covers parameters for saving call history, missed calls, and display options.
Explains how Yealink IP phones maintain a local directory for storing contacts, supporting up to 1000 contacts.
Describes LDAP as an application protocol for accessing information services for distributed directories over IP networks.
Covers how to use a centrally maintained phone book stored on a remote server.
Governs how IP phones process inputs from keypads using regular expressions for rules.
Allows dialing emergency numbers and provides location technology for E911 services.
Explains how to forward calls from any line to a contact, including different forwarding modes.
Details methods for transferring calls to a third party, including Blind, Semi-attended, and Attended transfers.
Summarizes supported audio codecs and their configurations for optimal audio quality.
Covers features like AEC, BNS, AGC, VAD, CNG for optimizing audio quality.
Allows triggering distinctive ring tones for incoming calls based on Alert-Info headers.
Describes configuring user and administrator access levels and default credentials for security.
Explains TLS as a protocol for secure communication, preventing eavesdropping and tampering.
Details SRTP for encrypting audio streams during VoIP calls for privacy.
Explains how to answer someone else's incoming call using Directed Call Pickup or Group Call Pickup.
Enables IP phones for call center roles by distributing incoming calls to available users or agents.
Allows monitoring specific remote lines for state changes and provides visual/audio alerts.
Supports Shared Call Appearance (SCA) and Bridged Line Appearance (BLA) to share a line.
Provides general information and methods for diagnosing and fixing common IP phone problems.
Describes how IP phones log events into boot and system logs for analysis and troubleshooting.
Details methods to reset the phone to factory default configurations to resolve persistent issues.
Addresses common problems encountered during phone firmware upgrades and verification.
Lists supported RFCs and Internet drafts relevant to IP phone functionality.
Provides a visual guide to LED/icon indicators and their meanings for various phone states.
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