What's happening
In large venues, devices moving between zones (e.g. from a main seating area to a concourse, locker room, or adjacent building) can experience poor call quality or dropped connections as they roam between access points — particularly when moving into an area with weaker or less densely deployed coverage.
Why this happens
Large venues often have uneven AP density across different zones — a main venue area might have dense, well-tuned coverage, while adjacent areas (walkways, secondary buildings, locker rooms) may have sparser coverage originally designed for data use rather than voice roaming. As a device moves from strong coverage into a weaker zone, a slow or poorly-tuned handoff can interrupt an active call.
Troubleshooting / configuration steps (for your network/IT team)
- Confirm the Hotspot 2.0 Access Network Type is set correctly for your deployment — misconfiguration here can affect how devices evaluate whether to roam.
- Enable Cellular Handoff Assist (or your platform's equivalent feature), which helps devices make smarter decisions about when to hand off between Wi-Fi and cellular, or between APs, based on signal quality.
- Enable 802.11r (fast BSS transition) to speed up handoff between access points, reducing the interruption window during roaming.
- Consider restricting the Passpoint SSID to 5 GHz only in venues with strong AP density — 5 GHz generally offers more stable performance in open, high-density indoor environments (note: this is the opposite recommendation from parking garage/structure deployments, where 2.4 GHz's better penetration is preferred — the right band depends on the physical environment).
- If a secondary or adjacent area has notably weaker coverage than the main venue, evaluate whether to extend full Passpoint deployment (matching AP density/tuning) into that area, or whether a temporary/interim SSID for that zone makes sense while a permanent solution is planned.
Adjust the minimum RSSI threshold required to join or remain on an AP, to encourage devices to roam to a stronger AP sooner in the weaker zone.
If the issue continues
If you've reviewed roaming and band settings and still see call quality issues when moving between zones, contact support with:
- Which areas/zones are affected
- What device and carrier you tested with
Our team can help review AP density and roaming configuration for the affected areas.
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