> For the complete documentation index, see [llms.txt](https://docs.spectralink.net/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.spectralink.net/amie-advanced/using-the-platform/device-details/device-call-history.md).

# Call History

**Call History** is the third of the five sections beneath a device's details: the voice calls the device made and received over the last 90 days, ten at a time, most recent first, with a quality score for each and totals across all of them. To reach it, open a device from the Devices [Inventory](/amie-advanced/using-the-platform/devices-inventory.md) tab and scroll down.

## Why this screen matters

When a user complains that calls on their phone sound bad, **Call History** says whether AMIE agrees: completed calls carry a quality score, and **Poor Quality** counts how many of the last 90 days' calls scored below 4.0. It also shows whether calls are completing at all — a call with no **End** never completed, or was never scored. Use it to decide whether the problem is this handset or the network: if this phone's calls are poor and others' are fine, look at the phone; if [Performance](/amie-advanced/using-the-platform/performance.md) shows poor calls across an access point, look at the network.

## Before you start

Calls with any activity — a start, a state change or an end — in the last 90 days are listed. A call that straddles that boundary is still shown, with its **Start** as its earliest activity inside the 90 days.

The section shows calls for the device whose page you are on; the [group selector](/amie-advanced/using-the-platform/the-console.md#the-group-selector) in the header has no effect on it.

## Screen layout

![Call History: the totals, three scored calls and the paging controls.](https://3032864282-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FxfLF6IpyutR429bMnvvf%2Fuploads%2Fgit-blob-535dfaa45e6b4d57c9a0b17a336684611c6d2979%2Fdevice-call-history.png?alt=media)

### Heading

**Call History** with a telephone icon and a **?**.

### Totals

Five figures in a row, each with a small label beneath it. They cover every call in the 90 days, not only the ten on the current page.

| Figure                    | What it shows                                                                                                         |
| ------------------------- | --------------------------------------------------------------------------------------------------------------------- |
| **Total**                 | Calls with activity in the last 90 days                                                                               |
| **Inbound**               | Those calls the device received                                                                                       |
| **Outbound**              | Those calls the device placed                                                                                         |
| **Poor Quality** (in red) | Calls whose quality score was below 4.0 — see the note below                                                          |
| **Avg Duration**          | The average length of the calls that have a recorded duration, as minutes and seconds — **3:42**. **—** when none has |

**Poor Quality** counts every call scoring under 4.0, which includes calls the table labels **Fair** (3.0 up to 4.0) as well as those it labels **Poor** (under 3.0). The count can therefore be larger than the number of **Poor** labels you will find in the table.

Calls whose direction could not be determined count toward **Total** but toward neither **Inbound** nor **Outbound**. With no calls in the 90 days, the section reads **No call history for this device.**

### The table

| Column            | What it shows                                                                                                                                                                      |
| ----------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| **Start**         | The date and time the call began, in your browser's time zone — **Sep 18, 2:47 PM**. No year is shown. For a call that began before the 90 days, the earliest activity inside them |
| **End**           | The date and time the call ended. **—** for a call that never completed or was never scored                                                                                        |
| **Duration**      | The call's length as minutes and seconds — **12:05**. **—** if the call never completed or was never scored                                                                        |
| **Direction**     | **← Inbound** or **→ Outbound**. **—** if the direction is not known                                                                                                               |
| **Quality (MOS)** | The call's quality band and its average score to one decimal place — **Good (4.3)**, **Fair (3.6)** or **Poor (2.8)** — green, yellow or red. **—** for a call with no score       |

**Quality (MOS)** is the call's average Mean Opinion Score, a measure of voice quality that AMIE computes from the measurements the handset reports during the call. It runs from 1 to 4.5: **Good** is 4.0 and above, **Fair** from 3.0 up to 4.0, and **Poor** below 3.0. Because the score is an average over the call, a call that was clear for nine minutes and unusable for one can still read **Good**. See [Call quality (MOS)](/amie-advanced/metrics-reference/call-quality-mos.md).

### Paging

Beneath the table: **First**, **Previous**, **Page 1 of 4**, **Next**, **Last**. Ten calls per page; the page size cannot be changed.

## Controls

| Control                                     | What it does                                                                                                            |
| ------------------------------------------- | ----------------------------------------------------------------------------------------------------------------------- |
| **First**, **Previous**, **Next**, **Last** | Move between pages of ten. Each is grayed out when it would not move you anywhere. The totals do not change as you page |

The table cannot be sorted or searched, and there is no date range: it always shows the last 90 days, most recent first.

## Icons and indicators

| Icon or indicator                             | Meaning                                                     | When it appears |
| --------------------------------------------- | ----------------------------------------------------------- | --------------- |
| Telephone icon before the heading             | Marks the section                                           | Always          |
| **?** beside the heading                      | Hover over it for a short description of the section        | Always          |
| Red **Poor Quality** figure                   | Draws the eye; red regardless of the value, including **0** | Always          |
| **←** / **→** before the direction            | Inbound / Outbound                                          | Per row         |
| Green **Good**, yellow **Fair**, red **Poor** | The call's quality band                                     | Per scored call |
| Spinning icon in place of the section         | The calls have not loaded yet, or a new page is loading     | While loading   |

## What to look for

* **Poor Quality** at a large share of **Total**. Many of this phone's calls scored under 4.0. Open [Session Activity](/amie-advanced/using-the-platform/device-details/device-session-activity.md) and line the **In call** bars up with **Network Connected** to see which access points the poor calls were on, then check that access point on [Performance](/amie-advanced/using-the-platform/performance.md).
* Several rows with **—** in **End**, **Duration** and **Quality (MOS)**. These calls never completed, or AMIE received no measurements to score them with. They count in **Total** and, where the direction is known, in **Inbound** or **Outbound**, but not in **Avg Duration** or **Poor Quality**.
* A run of **Poor** calls at the same time of day. Something may be happening on the network at that time. [Performance](/amie-advanced/using-the-platform/performance.md) shows whether other handsets saw it too.
* **Avg Duration** that looks wrong. It averages the calls with a recorded duration only, so a device with many unscored attempts and one long call shows that call's length.
* **Poor Quality** higher than the number of red **Poor** labels in the table. **Poor Quality** counts every call under 4.0, including **Fair** ones; the label reserves **Poor** for under 3.0. **Low MOS Events** on the [Call Performance Summary](/amie-advanced/using-the-platform/performance/performance-call-performance.md) tab also uses the 4.0 line, but counts a score of exactly 4.0 as low.
* **Start** times that differ from a colleague's. They are shown in each person's browser time zone — see [Time and time zones](/amie-advanced/metrics-reference/time-and-time-zones.md).

## Metrics on this screen

* [Call quality (MOS)](/amie-advanced/metrics-reference/call-quality-mos.md) — what the score measures and how the bands are set
* [Time and time zones](/amie-advanced/metrics-reference/time-and-time-zones.md) — the 90 days are a rolling window ending now; **Start** and **End** are displayed dates and times

## Related

* [Device details](/amie-advanced/using-the-platform/device-details.md) — the details above this section
* [Session Activity](/amie-advanced/using-the-platform/device-details/device-session-activity.md) — the **In call** row shows these calls on a timeline
* [Performance](/amie-advanced/using-the-platform/performance.md) — call quality across every device and access point


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