Hearing Aid Compatibility (HAC)

    In accordance with FCC regulations (47 CFR § 68.316), S Mobile Wireless provides the following hearing aid compatibility information for all currently offered VoIP desk phones, cordless phones, and accessories. This information is updated regularly.

    Last updated: March 2026

    Understanding Hearing Aid Compatibility Ratings

    ANSI C63.19-2019 Standard

    The 2019 ANSI Standard does not use the M/T rating system. Instead, devices must meet or exceed a single threshold for each type of test (i.e., "PASS") and must meet volume control specifications. The "conversational gain" measures acoustic gain — how loud sound is compared to a normal, face-to-face conversation.

    ANSI C63.19-2011 Standard

    The 2011 ANSI Standard uses the M/T rating system. "M" refers to radio-frequency (RF) emissions — the higher the M rating, the more likely the device works well with hearing aids in microphone mode. "T" refers to telecoil coupling — the higher the T rating, the better the device works with hearing aids in telecoil mode. A device is considered hearing aid compatible if rated M3 or M4 (acoustic coupling) and T3 or T4 (inductive coupling).

    Bluetooth Coupling Technology

    Many modern VoIP phones and headsets support Bluetooth-based audio streaming directly to hearing aids. Technologies include ASHA (Audio Streaming for Hearing Aids), LE Audio / HAP (Hearing Access Profile), and classic Bluetooth audio profiles. Check with your hearing aid manufacturer to confirm compatibility.

    Desk Phones Certified Under ANSI C63.19-2019

    DeviceFCC IDStandardTelecoilBluetooth CouplingConv. Gain w/ HAConv. Gain w/o HANotes
    Cisco 8865CiscoLDK1020902019✓ YesYes — Bluetooth Classic, Wideband Audio14 dB18 dBBuilt-in Bluetooth for wireless headset pairing. Meets telecoil certification under ANSI C63.19-2019.
    Poly Edge E550PolyBEJPOLY5502019✓ YesYes — Bluetooth 5.1, Wideband Audio12 dB17 dBColor touchscreen IP phone with integrated Bluetooth and Wi-Fi. Meets telecoil certification under ANSI C63.19-2019.
    Yealink T54WYealink2ALYNT54W2019✓ YesYes — Bluetooth 4.2, Wideband Audio13 dB16 dBPrime business phone with built-in Bluetooth and Wi-Fi. Meets telecoil certification under ANSI C63.19-2019.
    Yealink T58W ProYealink2ALYNT58W2019✓ YesYes — Bluetooth 4.2, Wideband Audio14 dB18 dBSmart business phone with 7-inch color touch screen, built-in Bluetooth and Wi-Fi. Meets telecoil certification under ANSI C63.19-2019.
    Yealink CP965Yealink2ALYNCP9652019✓ YesYes — Bluetooth 4.2, Wideband Audio15 dB19 dBHD conference phone with 360° voice pickup. Built-in Bluetooth and Wi-Fi. Meets telecoil certification under ANSI C63.19-2019.

    Desk Phones Certified Under ANSI C63.19-2011

    DeviceFCC IDStandardM-RatingT-RatingBluetoothNotes
    Yealink T33GYealink2ALYNT33G2011M3T3NoEntry-level IP phone. HAC-compliant handset with M3/T3 ratings.
    Poly VVX 450PolyBEJVVX4502011M3T3No (USB dongle optional)High-performance 12-line business IP phone. HAC-compliant handset with M3/T3 ratings.
    Poly VVX 250PolyBEJVVX2502011M3T3No (USB dongle optional)4-line business IP phone. HAC-compliant handset with M3/T3 ratings.
    Grandstream GRP2616GrandstreamYZZGRP26162011M3T3Yes — Bluetooth integrated6-line carrier-grade IP phone with integrated Bluetooth. HAC-compliant with M3/T3 ratings.
    Grandstream GRP2601GrandstreamYZZGRP26012011M3T3NoEssential 2-line IP phone. HAC-compliant handset with M3/T3 ratings.

    Cordless & Portable Phones

    DeviceTypeHAC CompliantBluetoothNotes
    Yealink W73PYealinkDECT Cordless (Handset + Base)✓ YesNoDECT IP cordless phone bundle. Handset supports narrowband and wideband audio. HAC-compliant handset.
    Yealink W60P BundleYealinkDECT Cordless (Handset + Base)✓ YesNoDECT cordless phone bundle supporting up to 8 handsets. HAC-compliant handset with hearing aid friendly receiver.
    Yealink W56HYealinkDECT Expansion Handset✓ YesNoExpansion handset for Yealink DECT bases. HAC-compliant with hearing aid friendly receiver.
    Grandstream WP810GrandstreamPortable Wi-Fi Phone✓ YesYes — Bluetooth integratedPortable Wi-Fi IP phone with Bluetooth. Dual-band Wi-Fi, HD audio. HAC-compliant handset.
    Poly Rove 30 + B2 BasePolyDECT Cordless (Handset + Base)✓ YesNoEnterprise-grade DECT cordless solution. HAC-compliant handset with noise-blocking technology.

    Accessories & Adapters

    DeviceTypeHAC CompliantBluetoothNotes
    Poly Voyager Focus 2PolyBluetooth Headset✓ YesYes — Bluetooth 5.1, Active Noise CancelingPremium ANC stereo Bluetooth headset. Compatible with hearing aids via Bluetooth audio streaming. Hybrid ANC for clear audio.
    Grandstream HT812GrandstreamAnalog Telephone Adapter (ATA)N/ANoATA device — converts analog phones to VoIP. HAC compliance depends on the connected analog handset, not the adapter itself.

    Important Information

    All VoIP phone models listed above have been evaluated for hearing aid compatibility based on manufacturer specifications and FCC-filed documentation. Compatibility ratings apply to the handset receiver; speakerphone and headset modes may vary.

    Hearing loss and hearing aids are highly individualized. Results will vary depending on the user's hearing aid and hearing loss. If your hearing aid happens to be vulnerable to interference, you may not be able to use a rated phone successfully. Trying out the phone with your hearing device is the best way to evaluate it for your personal needs.

    For devices certified under the 2019 ANSI Standard, the conversational gain values displayed represent the lowest rating assigned to the handset model for any covered air interface or frequency band.

    FCC Hearing Aid Compatibility Resources

    For additional information about hearing aid compatibility, FCC regulations, and consumer resources: