34 lines
1.4 KiB
Markdown
34 lines
1.4 KiB
Markdown
# Cascades — request to Vertical (Richard Turner): set Poly handsets to 5 GHz-only
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- **Date:** 2026-06-19
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- **To:** Richard Turner <RTurner@vertical.com> (Vertical, VoIP vendor)
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- **From:** Howard Enos, Arizona Computer Guru
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- **Why:** After the RF optimization, the residual dropped-call/audio issues are handsets stuck on
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saturated 2.4 GHz despite strong 5 GHz-capable signal (band-selection problem, not coverage).
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Controller-side band steering is on but not holding the Poly fleet on 5 GHz -> need a phone-side
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5 GHz band lock. Evidence: handsets on 2.4 at -50 to -60 dBm showing 36-96% retransmission vs <10%
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for handsets on 5 GHz. Poly OUI 48:25:67.
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---
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To: Richard Turner <RTurner@vertical.com>
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Subject: Cascades — set Poly handsets to 5 GHz-only
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Richard,
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We've finished optimizing the WiFi at Cascades. 5 GHz is now clean (2-3% utilization); 2.4 GHz is
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saturated at 84-91% and isn't usable for voice at this site.
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The remaining dropped-call/audio issues are all handsets that are sitting on 2.4 GHz despite a strong
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5 GHz-capable signal — some at -50 dBm showing 36-96% packet retransmission, versus under 10% for the
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phones on 5 GHz. It's a band-selection problem, not coverage.
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Please set the Poly WiFi handsets at Cascades to 5 GHz only (disable the 2.4 GHz band in provisioning)
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so they can't fall back to 2.4.
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Let me know when it's pushed and I'll confirm they re-home to 5 GHz from our side.
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Thanks,
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Howard Enos
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Arizona Computer Guru
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