> For the complete documentation index, see [llms.txt](https://prosbcdocs.telcobridges.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://prosbcdocs.telcobridges.com/telecom-references/ss7-and-signalling/outgoing-continuity-testing.md).

# Outgoing Continuity Testing

This new feature for version 2.7 allows users of the TMG unit to generate out of call SS7 ISUP Continuity Tests. Continuity tests are used to make sure that the SS7 ISUP interface circuit groups (CIC) are aligned with the physical links (E1/T1)

To do so, go the ISUP interface Circuit group:

```
 Status -> SS7 ISUP -> Select Circuit Group -> Start continuity check -> Yes
```

![CIC group COT](https://docs.telcobridges.com/w/images/e/e2/CIC_group_COT.png)

And then

```
 Apply States
```

This will send a ISUP CCR messages with the CIC value of these circuits, for every circuit in the group, and will send tones in-band that will be detected if the remote device has put itself in loopback.

The results will be shown in the Status page:

```
 Last ccr success cnt
```

or

```
 Last ccr fail cnt
```

It is also possible to do COT testing per circuit by clicking on **Circuits**

### Related Links

* [SS7 ISUP Status Menu](https://github.com/telcobridges-main/tmedia-wiki/tree/main/tmedia/configuration/status-menus-ss7-isup/README.md)
* [Configuring an ISUP Interface](https://github.com/telcobridges-main/tmedia-wiki/tree/main/tmedia/configuration/creating-an-isup-interface/README.md)
* [TMG-CONTROL Version 2.7](https://github.com/telcobridges-main/tmedia-wiki/tree/main/tmedia/legacy/tctrl-version-2-7/README.md)


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