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Charcoal wireless VoIP handset with backlit monochrome screen and keypad

Avaya

Avaya 6140 NTTQ4021E6 wireless VoIP handset 128x96 display 20 contacts 10 speed dials

SKU CH-5HZ4-JN4XW MPN NTTQ4021E6

A wireless VoIP handset with a 128x96 backlit display, 20-contact directory, 10 speed dials, and vibration alert

  • Supported standardsIEEE 802.11b/g/a
  • Supported protocolsIP, TCP, TFTP, ARP, DNS
  • Security features40 bit WEP, 128 bit AES, TKIP, WPA-PSK, WPA2-PSK
  • Display typeLCD display - monochrome, Backlit Resolution: 128 × 96 pixel
  • Power detailsPhone charging stand + power adaptor
  • Product typeWireless VoIP
  • Wireless VoIP frees you from cables
  • 128 x 96 backlit LCD shows caller details clearly
  • Stores 20 contacts and 10 speed dials for quick access
  • Dust and liquid resistant with shock protection for durability
  • Supports G.711 and G.729 codecs for clear voice quality

Wireless VoIP handset for mobile workers

The Avaya 6140 NTTQ4021E6 is a wireless VoIP handset that operates on IEEE 802.11b/g/a networks. It weighs 0.28 lb and measures 5.71" x 2.00" x 0.91", making it light enough for all-day carry. A backlit monochrome LCD shows battery status and signal strength at 128 x 96 pixels. The handset stores 20 directory entries and 10 speed dials, and includes a headset jack for hands-free calls.

Suited for roaming staff, not for desk-bound users

This handset targets employees who need voice connectivity while moving across a Wi-Fi covered site, such as warehouses, healthcare floors or retail spaces. Its vibration and silent alerts, push-to-talk mode, and shock and liquid resistance support active environments. It is not for users who require a colour display, a larger contact database, or a desk phone powered by PoE.

The 128 x 96 monochrome display decides readability

The screen resolution and monochrome technology determine how easily menus, caller ID and signal information can be read in varying light. If a clearer or colour display is needed for directory navigation or status details, this handset will not meet that requirement.

How it compares

Measured against everything we stock in IP Phones & VoIP Handsets, at today’s prices. Recalculated every night.

Price $464.99
Pricier than about 86% of the 495 comparable items (median $138.99).

Specifications

Product
Brand nameAVAYA
Model name6140 (NTTQ4021E6)
Product typeWireless VoIP
Display
Display typeLCD display - monochrome, Backlit
Resolution: 128 × 96 pixels
Information: Battery status, signal strength, Handsfree
Connectivity
Supported standardsIEEE 802.11b/g/a
Supported protocolsIP, TCP, TFTP, ARP, DNS
Power
Power detailsPhone charging stand + power adaptor
Size & build
Product dimensions5.71 in × 2 in × 0.91 in
Product weight0.28 lb (0.13 kg)
Shipping weight0.23 kg
Package size170 × 76 × 48 mm
More details
Security features40 bit WEP, 128 bit AES, TKIP, WPA-PSK, WPA2-PSK

Questions about this item

How do I set up the charging stand and power adaptor so the handset registers on the network?

Place the handset in the charging stand connected to the power adaptor, then configure the IP address assignment using DHCP, static or PPPoE to match your network.

Which part will need replacement first and how often?

The rechargeable battery inside the 0.28 lb handset will degrade over time and typically requires replacement after one to two years of daily charge cycles.

How many directory entries can I store before the phone memory is full?

The phone directory holds 20 names and numbers, and the speed dial list holds 10 entries; both limits are fixed in the handset firmware.

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