Yealink SIP-T21P E2 VoIP Phone Review: Feature Rich Entry Phone

A close view of the T21P E2 VoIP phone by Yealink.

Yealink SIP-T21P E2 VoIP Phone Review: Feature Rich Entry Phone

Yealink are well-known for their extensive series of VoIP phones ranging from entry level gadgets to enterprise grade solutions. The Yealink T2 series include models that feature multiple telephony functions and great voice quality. The new SIP-T21P E2 VoIP phone is an entry level VoIP phone that offers functionality usually available in enterprise level phones until recently.

T21P E2 VoIP Phone Characteristics at a Glance


LCD 2.3″ graphical LCD
Resolution 132 x 64
LCD Backlight Yes
Line 2
PoE √ (T21P E2)
GigE No
Wall MountingYes
Foot Stand 1adjustable angle
USB Port (2.0 compliant) No
Ethernet Port  2 x RJ45 10/100M Ethernet ports
Handset Port (RJ-9) Yes
Headset Port (RJ-9) Yes
External Yealink AC Adapter (optional)  AC 100~240V input and DC 5V/600mA output
(T21 E2: Standard/T21P E2: Optional)
Line Key 2
Memory Key 2
Yealink EXP50 Expansion Module No
Yealink EXP40 Expansion Module No
Yealink EXP20 Expansion Module No
Yealink EHS36 Wireless Headset Adapter No
Yealink YHS32 Headset Yes
Yealink Bluetooth Adapter BT40 No
Yealink Wi-Fi Adapter WF40 No
USB Recording No
3-way Conferencing Yes
HD Voice HD Speaker
HD Handset
Wide-band Codecs G.722, Opus
Narrow-band Codecs  G.711(A/µ), G.729AB, G.726, iLBC
LCD Type Fixed
Operating System Linux
Built-in Bluetooth No
Built-in Wi-Fi No
USB Headset No
Camera No
Video Resolution No
Video Codecs No
3-way Video Conferencing No
5-way video/audio mixed conferencing No

Source: Yealink

Business Use Cases

Distinguishing features include 132×64-pixel graphical LCD with backlight showing a clear 5-line data display and HD Voice. It may lack videoconferencing functionality but can manage from 2 to 16 VoIP accounts and is very affordably priced, which makes it a great choice for small businesses.

A scheme showing Yealink-t21p's functions.


Source: Yealink

The VoIP phones from the SIP-T2 series feature dual 10/100 network ports and provide support for IPv6, Open VPN along with a redundancy server. They also work with SRTP/ HTTPS/ TLS, 802.1x. which guarantees network use longevity. The integrated PoE enables smooth, flexible and secure installation of the device.

The T2 series is designed with business use in mind and provides headset compatibility. You can mount the T21P E2 VoIP phone on wall as well. It also features full-duplex speakerphone.

You should also take into account that the T21P E2 VoIP phone comes equipped with a handset, a base unit, a network cable, a handset cord and a stand. Many manufactures sell only the base unit with accessories being sold separately.

The Verdict

The T21P E2 VoIP phone is a budget friendly solution that is perfect for both small businesses and as an entry phone for medium sized businesses that still grow. The HD voice provides excellent call quality, which is a must for a business VoIP phone line. The graphical LCD display improves usability while XML/LDAP remote phonebook enables users to take advantage of remote management functionality.