2 SIP Accounts, 2 Lines GDMS online device management and provisioning 3-way audio conferencing for easy conference calls Integrated dual-band 2.4GHz & 5GHz 802.11 a/b/g/n/ac (GHP610W & GHP611W only) Includes one 100Mbps network port with PoE Speed dial label and swappable faceplate to allow for easy customization Hearing Aid Compatibility (HAC) Enterprise-level protection including secure boot