If you cannot dedicate an SSID to voice, assign a VLAN dedicated to wireless.
The Meraki MR series of WiFi access points have been tested by Cisco Meraki to provide the highest quality VoIP experience when using Cisco Jabber, Microsoft Lync, Microsoft Skype for Business, Broadsoft, Cisco 7900 Series phones, SpectraLINK phones, Ascom phones, Cisco phones, and Apple iPhones. Voice over IP (VoIP) has replaced telephones in enterprise networking with IP-based phones. While the majority of desk phones using VoIP require ethernet, there are many voice applications and wireless VoIP phones that operate over WiFi. This article is a guide to optimize Quality of Service (QoS) for wireless Voice over IP applications on Meraki MR wireless access points.