Classic IP Phone DP22 Series

The DP22 is a classic IP phone that supports the registration of 6 SIP accounts. It features a 2.4-inch 320x240 resolution color LCD screen with backlight, advanced voice codec algorithms, and intelligent noise reduction technology. The DP22 Series delivers high-definition voice quality and is suitable for ordinary employees, front desk staff, operators, secretaries, and assistants.

Classic IP Phone DP22 Series

The DP22 Series is a classic IP phone launched by Star-net for government and enterprise customers, supporting the registration of 6 SIP accounts simultaneously. The product features a 2.4-inch 320x240 resolution color LCD screen with backlight, rich voice codec algorithms, and intelligent noise reduction technology. It supports Opus voice codec and intelligent sound insulation technology, providing users with high-definition voice quality. Additionally, it includes a 6-party local conference function and supports large-capacity local address book storage, further enhancing users' office collaboration efficiency. The phone comes with programmable keys and is suitable for ordinary employees, front desk staff, operators, secretaries, and assistants.

Key Features

Stylish Appearance Design

Stylish appearance design with a 2.4-inch 320x240 resolution color LCD screen, suitable for business office scenarios, ergonomic design details for a more comfortable operational experience.

High Fidelity Sound Quality

Utilizes Star-net Ruijie's patented audio algorithm, intelligent noise reduction technology, support for sound insulation technology, Opus voice codec, and rich voice codec algorithms, offering users a clearer voice communication experience.

Multi-line Support

Supports 6 lines and can simultaneously register 6 SIP accounts, meeting the needs of multiple line simultaneous incoming, holding, and waiting scenarios in business office environments.

Large Capacity Address Book

Supports a maximum of 2000 address book entries, including local address book, remote address book, and blacklists.

Rich Extension Functions

Built-in USB interface for connecting USB devices to expand functionality, and supports wall-mount deployment.

Technical Parameters

Audio Features
High-fidelity sound quality	Full-duplex hands-free, HD handset with automatic echo cancellation. Supports AEC, ANS, AGC, CNG, VAD, AJB, and other audio processing
Wideband codecs	G.722, OPUS
Narrowband codecs	G.711a、G.711u、G.723、G.729AB、iLBC
DTMF	In-band, RFC2833, SIP INFO
Acoustic Echo Cancellation (AEC), background noise suppression (BNS), automatic gain control (AGC), comfort noise generation (CNG), voice activity detection (VAD), automatic jitter buffer (AJB), soundproofing.
Phone Features
Line quantity	6 lines (supports simultaneous registration of 6 SIP accounts)
Number of keys	32 physical keys (including 4 physical programmable soft keys, 3 physical programmable function keys, 3 physical programmable line keys with red/green dual-color LEDs)
Call functions	Mute, do not disturb
	Call hold, call transfer, call waiting
	Call forwarding
	Redial, speed dial, hotline
	IP direct dial
	6-party voice conference
	Auto answer
Phone settings	Manual or automatic time setting
	Volume adjustment, customizable ringtones
	Language switching
	Screen saver
	USB recording
	WIFI connection (DP22W only)
Address Book	Supports local address book: 2000 entries, supports import/export of address book
	local address book, LDAP address book, remote address book (enterprise address book)
	Blacklists
	Address book search
	Call records: missed calls, received calls, dialed calls, call blocking
IP-PBX Features
Call hold, call waiting, call forwarding
call forward (unconditional, no answer, busy)
call transfer (blind transfer, consultative transfer)
Caller ID display
Voicemail
Network Security Features
Network Features	Supports SIP V1 (RFC2543), V2 (RFC3261) protocol
	RTP/RTCP
	DNS SRV(RFC3263)
	NAT/DHCP service
	Two IP acquisition methods: static IP/DHCP
	DTMF (in-band, RFC2833, SIP INFO)
	Bridge mode
	Built-in HTTP/HTTPS web server for configuration management
	Built-in SNTP time protocol
	Built-in DNS client
	Supports 802.1Q VLAN
Security Features	Supports HTTPS (SSL)
	Supports VLAN (802.1p/1q)
	Supports IEEE802.1X
	Supports LLDP-MED
	Supports keyboard lock to protect personal privacy
	Supports administrator/user hierarchical mode
	Supports SRTP media encryption protocol
	Supports TLS signal encryption protocol
	Supports AES encryption protocol
Interfaces
Audio Output	1×RJ9 (4P4C) handset interface, 1×RJ9 (4P4C) headset interface, 1×USB headset interface
Network Interface	2×RJ45 10/100M Ethernet ports
Configuration Management
Configuration Methods	Supports HTTP/HTTPS protocol for web configuration management, Supports DHCP+HTTP/HTTPS automatic deployment, Supports four configuration modes: web page, phone keyboard, automatic configuration, EMU configuration distribution.
Management Methods	Supports TR069 for remote network management, Supports manual update via HTTP/HTTPS
Physical Characteristics
Body Color	Elegant gray
Dimensions	Main unit size: 221×188×45mm, Main unit size: 221×188×84mm (with handset)
Package Dimensions	Retail box size: 260×228×68mm, Shipping box size: 470×355×285mm (10 units)
Operating Environment	Operating Voltage: DC 5V/1A Operating Frequency: 48Hz-60Hz Operating Temperature: -5℃ to 40℃ Storage Temperature: -20℃ to +60℃

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