Yealink SIP T42S Ultra Elegant VoIP IP Phone Specs: Audio Features HD voice: HD handset, HD speaker Hearing aid compatible (HAC) handset Wideband codec: Opus*, G.722 Narrowband codec: Opus*, G.711(A/µ), G.723.1, G.729AB, G.726, iLBC DTMF: In-band, Out-of-band(RFC 2833) and SIP INFO Full-duplex hands-free speakerphone with AEC VAD, CNG, AEC, PLC, AJB, AGC Phone Features 12 VoIP accounts One-touch speed dial, redial Call forward, call waiting Call transfer, call hold Call return, group listening Mute, auto answer, DND 3-way conference call Direct IP call without SIP proxy Ring tone selection/import/delete Hotline, emergency call Set date time manually or automatically Dial plan, XML Browser, Action URL/URI RTCP-XR (RFC3611), VQ-RTCPXR (RFC6035) USB port (2.0 compliant): Bluetooth earphone through BT40 (pending), Wi-Fi through WF40 (pending), USB call recording through USB flash drive (pending) Enhanced DSS key Directory Local phonebook up to 1000 entries Black list XML/LDAP remote phonebook Smart dialing Phonebook search/import/export Call history: dialed/received/missed/forwarded IP-PBX Features Busy Lamp Field (BLF) Bridged Line Apperance (BLA) Anonymous call, anonymous call rejection Hot-desking, voice mail Flexible seating Call park, call pickup Executive and Assistant Centralised call recording Visual voice mail Call recording Display and Indicator 2.7″ 192×64-pixel graphical LCD with backlight LED for call and message waiting indication Dual-colour (red or green) illuminated LEDs for line status information Intuitive user interface with icons and soft keys Multilingual user interface Caller ID with name and number Power saving Feature keys 6 line keys with LED 6 line keys can be programmed up to 15 paperless DSS keys (3-page view) 5 features keys: message, headset, mute, redial, hands-free speakerphone 4 context-sensitive “soft” keys 6 navigation keys 2 volume control keys Illuminated mute key Illuminated headset key Illuminated hands-free speakerphone key Interface Dual-port Gigabit Ethernet Power over Ethernet (IEEE 802.3af), Class 2 1 x USB port (2.0 compliant) 1 x RJ9 (4P4C) handset port 1 x RJ9 (4P4C) headset port 1 x RJ12 (6P6C) EHS port Other Physical Features Stand with 2 adjustable angles Wall mountable External Yealink AC adapter (optional)：AC 100~240V input and DC 5V/1.2A output Power consumption (PSU): 1.69-5.0W Power consumption (PoE): 2.47-12.5W Dimension (W*D*H*T): 212mm*189mm*175mm*54mm Operating humidity: 10~95% Operating temperature: -10~50°C Management Configuration: browser/phone/auto-provision Auto provision via FTP/TFTP/HTTP/HTTPS for mass deploy Auto-provision with PnP Zero-sp-touch, TR-069 Phone lock for personal privacy protection Reset to factory, reboot Package tracing export, system log Network and Security SIP v1 (RFC2543), v2 (RFC3261) Call server redundancy supported NAT traversal: STUN mode Proxy mode and peer-to-peer SIP link mode IP assignment: static/DHCP HTTP/HTTPS web server Time and date synchronization using SNTP UDP/TCP/DNS-SRV(RFC 3263) QoS: 802.1p/Q tagging (VLAN), Layer 3 ToS DSCP SRTP for voice Transport Layer Security (TLS) HTTPS certificate manager AES encryption for the configuration file Digest authentication using MD5/MD5-sess OpenVPN, IEEE802.1X IPv6 LLDP/CDP/DHCP VLAN ICE # Check IP Phone Models # Check PABX Products
