# Phone router question

**URL:** https://forum.networklessons.com/t/phone-router-question/5384
**Category:** IP Routing
**Created:** [November 5, 2018, 3:57pm UTC](https://forum.networklessons.com/t/phone-router-question/5384 "2018-11-05T15:57:07Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![bill.strube](https://cdn-forum.networklessons.com/letter_avatar_proxy/v4/letter/b/ec9cab/32.png) [@bill.strube](https://forum.networklessons.com/u/bill.strube)
#### Post date: [November 5, 2018, 3:57pm UTC](https://forum.networklessons.com/t/phone-router-question/5384/1 "2018-11-05T15:57:07Z")

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We have a Cisco 2921 router. When they used the intercom extensively, it would reboot the router. We put a “huntstop” command for the dial-peer for the Intercom. The router is no longer rebooting, but we are seeing another issue. Here is a snippet of the log and can someone shed some light for me as to what is causing this?

```
Nov 2 14:39:23.341: %VOICE_IEC-3-GW: CCAPI: Internal Error (Trunk group resource busy): IEC=1.1.181.1.36.170 on callID 682 GUID=C211BD00000100000001E415064E010A
Nov 2 15:31:59.723: %VOICE_IEC-3-GW: CCAPI: Internal Error (Trunk group resource busy): IEC=1.1.181.1.36.160 on callID 940 GUID=1B311F00000100000002DFB3024E010A
Nov 2 15:31:59.723: %VOICE_IEC-3-GW: CCAPI: Internal Error (Trunk group resource busy): IEC=1.1.181.1.36.170 on callID 940 GUID=1B311F00000100000002DFB3024E010A
Nov 2 15:32:08.103: %VOICE_IEC-3-GW: CCAPI: Internal Error (Trunk group resource busy): IEC=1.1.181.1.36.160 on callID 941 GUID=208E6980000100000002DFB4024E010A
Nov 2 15:32:08.103: %VOICE_IEC-3-GW: CCAPI: Internal Error (Trunk group resource busy): IEC=1.1.181.1.36.170 on callID 941 GUID=208E6980000100000002DFB4024E010A

```

Thanks in advance.

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<div class="post-metadata">

### Author: ![lagapidis](https://cdn-forum.networklessons.com/user_avatar/forum.networklessons.com/lagapidis/32/4949_2.png) [@lagapidis](https://forum.networklessons.com/u/lagapidis)
#### Post date: [November 11, 2018, 8:34am UTC](https://forum.networklessons.com/t/phone-router-question/5384/2 "2018-11-11T08:34:17Z")

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Hello Bill

Notice that there are two error codes being displayed. There’s IEC code 1.1.181.1.36.160 and 1.1.181.1.36.170. In order to find out more about these, issue the following two commands:

show voice iec description 1.1.181.1.36.160  
show voice iec description 1.1.181.1.36.170

The output will tell you more about the problem. Share your results here so we can take a look and help you further.

I hope this has been helpful!

Laz