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Cordless DECT IP Multi-Cell System
The Yealink W90 DECT IP Multi-Cell System, consisting of two elements - a base station W90B and a DECT Manager W90DM, is designed to provide the organizations who require wireless coverage with the full ease of deployment. This DECT multi-cell system intends to create an extremely scalable and reliable solution for the organizations of any size and any shape. The system supports up to 250 handsets and 250 simultaneous calls, which ensures one call in each handset, and allows you to get rid of the limited wireless signal coverage of only one base station. Meanwhile, the system can work with Yealink W53H, W56H, W59R, CP930W, and DD Phone with seamless roaming and handover of the calls, making freely mobile communication in and between each zone achievable. Both W90B and W90DM join the modern, compact design with Yealink HD voice quality, which is wrapped with the full-duplex technology Opus, that setting free your ears and giving you an elaborate audio experience.

Seamless Stability
The Yealink W90 DECT IP Multi-Cell System brings seamless stability. The rotatable external antennas ensure further signal range, industry-leading coverage, and flexible steering for complex areas, which truly saves amount and cost of bases in deployment with industry-leading coverage. Moreover, the Lan Sync guarantees stable roaming even in poor signal transmission environment or strong signal interference like warehouses with overcrowded cargos or several iron gates.

Easy Deployment
The Yealink W90 DECT IP Multi-Cell System provides easier and faster setup for users: the DECT Deployment Toolkit for quick base location, IP discovery tool for quickly getting IP of DM, and auto sync level for self-organizing network without manual operation. Instead of complex steps, it takes less time from deployment to daily management for large system.

Wide Coverage
Available for 1DM, 60 bases, 250 handsets and 250 parallel calls, the Yealink W90 DECT IP Multi-Cell System is tailored for large space and multi-locations & bases, delivering unified communicating solution especially for warehouses, hospitals, hotels, supermarkets chains, cruises, authorized car dealerships, offices, retail formats, etc. Virtual machines and more bases will be supported in the future, boarding the coverage once more.

Full Scenarios
The Yealink W90 DECT IP Multi-Cell System supports various devices: W53H, W56H, W59R, CP930W, DD Phone, which definitely matches different employee roles and full scenes communicating demand from mobile, desk to conference with flexible scalability.

Multiple Phone Books
The Yealink W90 DECT IP Multi-Cell System offers easy access to multiple phone books, including Local Directory, Remote Phonebook, LDAP, and XML Phonebook. Additionally, it is broadly compatible with PBX contacts.

Yealink W90DM. Management protocols: TFTP/FTP/HTTP/HTTPS/RPS, Supported network protocols: SIP v1 (RFC2543), v2 (RFC3261), SNTP/NTP, VLAN (802.1Q and 802.1P), 802.1x, LLDP, STUN, UDP/TCP/TLS, Security algorithms: AES, HTTPS, SHA-384, SHA-512, SRTP, TLS. Phonebook capacity (per handset): 100 entries. Frequency range (EU): 1880 - 1900 MHz, Frequency range (US): 1920 - 1930 MHz, Maximum indoor range: 1968.5" (50 m). Ethernet LAN data rate supported (max): 100 Mbit/s. Product color: White

Number of handsets supported (max)	250
Number of carrier frequencies	2
Number of VoIP accounts	250
Management protocols	TFTP/FTP/HTTP/HTTPS/RPS
Supported network protocols	SIP v1 (RFC2543), v2 (RFC3261), SNTP/NTP, VLAN (802.1Q and 802.1P), 802.1x, LLDP, STUN, UDP/TCP/TLS
Number of bases supported (max)	60
Security algorithms	AES, HTTPS, SHA-384, SHA-512, SRTP, TLS
Wireless synchronization	Yes
Hearing aid compatibility	Yes
Dual-Tone Multi-Frequency (DTMF)	Yes
Keypad lock	Yes
XML browser	Yes
IPUI registration	Yes
User access level	Yes
Auto-provision	Yes
Over the Air Updates (OTA)	Yes
Conference call	Yes
Number of parallel conferences	3
Phonebook capacity (per handset)	100 entries
Number of simultaneous calls (max)	100
Number of WB calls per base supported (max)	8
Number of NB calls per base supported (max)	8
Number of simultaneous calls per handset	2
Anonymous call	Yes
Anonymous call rejection	Yes
Call waiting	Yes
Call forwarding	Yes
Caller ID	Yes
Remote phonebook	Yes
Call transfer	Yes
Call hold	Yes
Do not disturb function	Yes
Switching between calls	Yes
Mute function	Yes
Speed dialing	Yes
Integrated voicemail	Yes
Redialing	Yes
Message Waiting Indication (MWI) function	Yes
Phonebook search/import/export function	Yes
Call history	Yes
Reset function	Yes
Emergency call	Yes
Shared Call Appearance (SCA)	Yes
System log export	Yes
Frequency range (EU)	1880 - 1900 MHz
Frequency range (US)	1920 - 1930 MHz
Maximum indoor range	1968.5" (50 m)
Maximum outdoor range	11811" (300 m)
Ethernet LAN	Yes
Ethernet LAN (RJ-45) ports	1
Ethernet LAN data rate supported (max)	100 Mbit/s
Product color	White
Full duplex	Yes
Wall mountable	Yes
LED indicators	Yes
Input voltage	100 - 240 V
Power over Ethernet (PoE)	Yes
Output voltage	5 V
Output current	1.2 A
Operating temperature (T-T)	0 - 40 °C
Operating relative humidity (H-H)	10 - 95%
Dimensions (WxDxH)	5.28 x 3.94 x 1.1" (134 x 100 x 28 mm)
Weight	6.17 lbs (2.8 kg)
Package width	6.22" (158 mm)
Package depth	7.99" (203 mm)
Package height	2.48" (63 mm)
Package weight	7.5 lbs (3.4 kg)
Harmonized System (HS) code	85177900
Quick start guide	Yes