YEALINK SIP-T48U IP PHONE

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IP Telephony

Main Features	Multiple VoIP protocol support, integrated Ethernet switch
VoIP	Yes
VoIP Protocols	SIP, SIP v2, SRTP, RTCP-XR, VQ-RTCPXR
Voice Codecs	G.722, G.723.1, G.729ab, G.711a, G.726, iLBC, G.711�
Quality of Service	IEEE 802.1Q (VLAN), IEEE 802.1p, Type of Service (ToS)
IP Address Assignment	DHCP, static
Security	IEEE 802.1X, TLS, SSL
Power Over Ethernet (PoE) Support	Yes
Network Protocols	TCP, TFTP, UDP, HTTP, DNS, HTTPS, SRTP, TR-069, SNTP
Network Ports Qty	2 x Ethernet 10Base-T/100Base-TX/1000Base-T
Voice Features	Comfort noise generation (CNG), voice activity detection (VAD), HD Voice, acoustic echo cancellation (AEC), packet loss concealment (PLC), adaptive jitter buffer (AJB), automatic gain control (AGC)
Network Features	Network Address Translation (NAT), Class 3 PoE, Lightweight Directory Access Protocol (LDAP), 16 VoIP accounts

Phone Memory

Phone Directory Capacity

1000 names & numbers

Miscellaneous

Connections	Headset jack / RJ-9 � 2 x USB � Handset jack / RJ-9
Placing / Mounting	Table-top
Cables Included	Ethernet cable - 6.6 ft
Included Accessories	Stand

Dimensions & Weight (Base)

Manufacturer Warranty

Service & Support

Limited warranty - 1 year

General

Product Type	VoIP phone
Body Color	Classic gray

Phone Features

Call Services	Voice Mail, Caller ID, Call Waiting, Call Forwarding, Call Transfer, Call Hold
Caller ID Type	Caller ID
Dialer Location	Base
Conference Call Capability	10-way
Speakerphone	Yes
Volume Control	Yes
Indicators	Message waiting indicator, call waiting indicator
Additional Functions	Call recording, Intercom, redial, mute, emergency call, auto answer, Do Not Disturb (DND), call return

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