Documented specifications
Yealink · Manufacturer documentation available at review; remaining support period and local availability not established.
| Specification | Documented value |
|---|---|
| SIP accounts | Up to 10 Source ↗ |
| Paired devices | Up to 10 compatible DECT handsets or headsets Source ↗ |
| Calls | Current product page advertises up to 20; verify firmware and codec limits Source ↗ |
| Radio | DECT Source ↗ |
| Security | TLS and SRTP Source ↗ |
| Compatible handsets | Includes W73H, W78H and W59R Source ↗ |
Unlisted fields remain unverified. Platform compatibility and remaining support life require confirmation for the exact ordered model.
What it is and why consider it
W70B provides the IP-side call control connection for a small Yealink cordless deployment. Choose it as a base station, then select handsets according to display, headset and durability needs.
Reasons to choose something else
A single base does not provide a multi-cell campus. The current advertised call limit differs from older W70B literature, so confirm the supported firmware and bandwidth assumptions before capacity planning.
Deployment and acceptance checks
Survey the full work area with the chosen handset and test several simultaneous calls. Record base and handset firmware together; do not use the number of paired handsets as a guaranteed call-capacity result.
Record the ordered model, hardware revision, installed firmware and calling platform together. Confirm administrator and provisioning ownership before connecting a previously used device. Keep the previous configuration and a supported recovery method before changing firmware; an arbitrary downgrade can remove security fixes.
Firmware, support and evidence
Use the linked Yealink support resources to match the device to its approved firmware and provisioning instructions. The facts above come from manufacturer documentation; no hands-on measurements, current price or merchant offer are implied.
Where the table does not specify display, SIP-account capacity, network ports, PoE, Wi-Fi, Bluetooth, codecs, headset or expansion support, that field remains unverified for this record. A base station, handset and accessory have different responsibilities; do not copy a feature between them. Confirm lifecycle notices and support entitlement before a fleet purchase.
Sources & applicability
Primary references for the technical details above. Operational examples and planning checklists are VoIP.info editorial guidance.
Examples require adaptation to your topology. No live PBX or hardware testing is claimed.