WiFi Phones
WiFi phones use the existing corporate wireless network (IEEE 802.11a/b/g/n/ac, 2.4 or 5 GHz) for VoIP telephony via SIP protocol. They are ideal for companies with company-wide WiFi where a separate DECT infrastructure is to be avoided. Challenges: WiFi quality (roaming, jitter, packet loss) directly affects voice quality. QoS prioritisation (WMM, 802.11e) and fast roaming (802.11r) are prerequisites for reliable telephony. Manufacturers such as Snom (M400 WiFi), Yealink (W60B) and Cisco (8821) offer enterprise-capable WiFi handsets with long battery life (8–12 hours talk time) and integration into Cisco CME / 3CX / Asterisk.
Common Manufacturers: Snom • Yealink • Cisco • Grandstream • Fanvil
WLAN-Phones from Startech.com
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 Startech.com RXFXSMSFPST RX-FXSM-SFP COMPATIBLE
SFP MODULES - SM TRANSCEIVERSLieske Part No.: 1541668 Mfg Part No: RXFXSMSFPST |
9,99 EUR 10,06 EUR
 plus delivery charges
Delivery time on requestinfo_outline
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WiFi Phones – Product Details & Advice
WiFi phones use the existing corporate wireless network (IEEE 802.11a/b/g/n/ac, 2.4 or 5 GHz) for VoIP telephony via SIP protocol. They are ideal for companies with company-wide WiFi where a separate DECT infrastructure is to be avoided. Challenges: WiFi quality (roaming, jitter, packet loss) directly affects voice quality. QoS prioritisation (WMM, 802.11e) and fast roaming (802.11r) are prerequisites for reliable telephony. Manufacturers such as Snom (M400 WiFi), Yealink (W60B) and Cisco (8821) offer enterprise-capable WiFi handsets with long battery life (8–12 hours talk time) and integration into Cisco CME / 3CX / Asterisk.
DECT alternatives without WiFi dependency: DECT System Phones. SIP desk phones: IP System Phones.
Frequently Asked Questions
▶ WiFi phone or DECT – which is better? DECT: optimised for voice telephony, dedicated frequency band, no WiFi conflict potential, simpler roaming without WiFi planning. Recommended when no company-wide WiFi infrastructure exists. WiFi phone: uses existing WiFi, no separate DECT infrastructure needed, UC integration easier (as IP-native). Prerequisite: enterprise-grade WiFi with WMM QoS and 802.11r roaming. |
▶ What is 802.11r and why is it important for WiFi phones? IEEE 802.11r (Fast BSS Transition) reduces the time for the WiFi roaming process (switching between access points) from 50–200 ms to <50 ms. In voice telephony, roaming >150 ms causes audible interruptions ('dropouts'). 802.11r is therefore a prerequisite for seamless voice telephony during mobile use over WiFi. |
▶ Can a WiFi phone work outside WiFi coverage? No – WiFi phones are completely dependent on the WiFi network. Outside WiFi coverage, calls are not possible. Some models support dual-mode operation (WiFi + GSM/LTE) that automatically switches to mobile when WiFi is unavailable – these devices require a SIM card. |