2026-01-19 – Weekly Telecom News : VoIP QoS settings that work

Last week in the Telecom forum, discussions were vibrant with a mix of technical and practical topics. Members delved into the nitty-gritty of Quality of Service (QoS) for VoIP, exploring settings that ensure optimal voice communication. There was also significant interest in low-cost solutions for auditing RAN KPIs, reflecting a common concern about balancing cost with performance. Another hot topic was the integration of EVPN/VXLAN in existing network infrastructures, which brought out valuable shared experiences from those who’ve tackled similar challenges.


This Week’s Hot Topics

Looking for battle-tested VoIP QoS defaults
Members are sharing their experiences with QoS settings that provide reliable call quality. This is crucial for anyone managing VoIP networks.
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Low-cost RAN KPI audit stack
The community is buzzing about budget-friendly methods to audit RAN KPIs, a must-read for those keeping an eye on costs.
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EVPN/VXLAN in a brownfield core
This thread covers the challenges and solutions for implementing EVPN/VXLAN in existing networks, offering valuable insights from the field.
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What toolchain keeps crews aligned
A practical discussion on toolchains that enhance team coordination and efficiencyβ€”essential for streamlined operations.
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Why POTS runs on 48 volts
Explore the historical and practical reasons behind the 48-volt standard in POTS linesβ€”a fascinating dive into telecom history.
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POTS ring is ~90 VAC at 20 Hz
This technical discussion sheds light on the specifications of POTS ringing voltage, an interesting topic for telecom tech enthusiasts.
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Looking for a bulletproof pre-climb checklist
An essential exchange for anyone involved in tower work, focusing on safety and thoroughness before climbs.
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What belongs in a pre-launch audit trail
A detailed look at the components of a pre-launch audit, critical for ensuring seamless project rollouts.
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Next-level tower rescue and RF training
A must-read for those interested in advanced training techniques for tower rescues and RF safety.
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What β€˜deprioritized’ really means on unlimited plans
Unpacking the term β€˜deprioritized’ in the context of mobile plans, this thread is key for understanding service limitations.
Read more here


That’s all for this week’s digest. Looking forward to seeing more of your valuable contributions and discussions in the forum. Have a great week!

1 Like

Push for comp tied to β€˜28% in three weeks’ outcomes and referral credits; confirm CS owns renewals.

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What’s worked for us is trusting DSCP at the edge and marking RTP to β€œEF (46)” with signaling as CS3, capping LLQ around 20% and keeping jitter buffers about 20–30 ms β€” saved us from robot-voice Fridays. On low-bandwidth WANs, shape before you prioritize or EF will bulldoze everything else; RFC 3246 has the why: RFC 3246 - An Expedited Forwarding PHB (Per-Hop Behavior).

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@cwatson91 nailed the marking side; the tweak that killed our branch jitter bursts was shaping each WAN to about 95% and enabling LFI so 1500‑byte data can’t sit in front of 20 ms RTP β€” small CPU/overhead trade, but absolutely worth it?

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@cwatson91 plus one on marking; what finally stabilized ours was turning on call admission control per site (CUCM Locations) sized to the real LLQ so extra calls get blocked instead of trashing RTP. Small caveat: confirm your carrier’s DSCP map at the handoff β€” I’ve seen EF quietly remapped to AF41 unless you ask, which wrecks the plan.

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