Yealink W80B SIP DECT IP Multi-Cell Base Station

The span of frequencies, expressed in hertz (Hz), that a device can operate within or respond to. It may be given as a single value, a numeric range (e.g., "20 000‑50 000 Hz"), or an open‑ended interval such as "2.4 GHz+" indicating the lower bound only.

The Harmonized System (HS) code is a standardized numerical identifier used internationally to classify traded goods. It consists of up to six digits, where each pair of digits represents progressively more specific product categories. The HS code facilitates customs duties, trade statistics, and regulatory compliance by providing a common language for describing products across borders.

The total count of Voice‑Over‑Internet‑Protocol (VoIP) user accounts that can be configured or supported on the device. It represents how many separate telephone lines or extensions are available for simultaneous use, helping buyers compare capacity across models.

A list of audio codecs that the product can use for transmitting or recording voice signals, such as G.711, AMR‑NB, Opus, etc. Each value represents a valid codec supported by the device’s hardware or software.