> ## Documentation Index
> Fetch the complete documentation index at: https://docs.famulor.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Technical Optimization

> Optimize call quality, DTMF/IVR, interruptions, voices & latency

## Audio & Network

* Stable bandwidth, low latency, QoS where possible
* Target values: **One-way latency ≤ 150 ms** for good call quality
* Source: [ITU‑T G.114 – One-way Transmission Time](https://www.itu.int/rec/T-REC-G.114)

## Assistant Tuning

* Choose a voice suited to the use case (clear vs. natural)
* Adjust interruption threshold based on the target audience
* Use filler audios to reduce response time

## IVR & DTMF

* Test the DTMF tool (key sequences, timing)
* Follow RTP-DTMF according to **RFC 4733** (Out-of-Band)
* Source: [RFC 4733 – RTP Payload for DTMF Digits](https://www.rfc-editor.org/rfc/rfc4733)

<Info>
  Troubleshooting see: [/troubleshooting/call-quality](/en/troubleshooting/call-quality) · [/automation-platform/calls-related/sms-capabilities](/en/automation-platform/calls-related/sms-capabilities)
</Info>

## Brief Study: Voice Quality & IVR

* **Data basis**: ITU-T recommendations (G.114), IETF/RFC 4733
* **Key points**:
  * Speech intelligibility decreases measurably beyond 150 ms one-way latency
  * Out-of-band DTMF is preferred over in-band for IVR reliability
* **Limitations**: Real networks vary (jitter/loss); monitoring required

## References

* ITU-T G.114: [https://www.itu.int/rec/T-REC-G.114](https://www.itu.int/rec/T-REC-G.114)
* RFC 4733: [https://www.rfc-editor.org/rfc/rfc4733](https://www.rfc-editor.org/rfc/rfc4733)