Erwin Bierens Blog

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Audiocodes MediaPack Loses Static IP Address

2019-01-29 1 min read Audiocodes Erwin Bierens

By default the Audiocodes MediaPacks, sent out a BootP request during a cold start of the device. If you have a enterprise DHCP server active in the network this will probaly respond (undesired) to this request and will give you a DHCP release from the DHCP pool. This way the MediaPack will receive a new IP address from the DHCP pool everytime it will have a cold start.

The setting ‘BootPSelectiveEnable = 1’ enables the device’s integral BootP client to filter unsolicited BootP/DHCP replies and accepts only BootP replies that contain the text ‘AUDC’ in the vendor specific information field of the request.

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Upgrade Audiocodes OVOC 7.4.328 to 7.6.143

2018-11-15 2 min read Audiocodes Erwin Bierens

AudioCodes One Voice Operations Center (OVOC) is a voice network management solution that combines management of voice network devices and quality of experience monitoring into a single, intuitive web-based application.

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Upgrading

Download the right ISO from the Audiocodes site. Here’s the deeplink (link)

Mount the ISO to the linux system in your Hypervisor.

Login using Putty to the SSH shell with user acems and default password acems.

Promote yourself to root with:

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Deploy error Skype for Business Cloud Connector - CredSSP

The problem

Last week i ran in to some errors while re-deploying a Cloud Connector, Changed some settings in the INI and while starting the redeploy gave me the following error:

	`Preparation phase started...
	The configuration file for Cms server setup is generated in C:\Users\Administrator\CloudConnector\ApplianceRoot\Instances\2.1.0\ExportedConfig\ServerConfig-Cms.ini.
	Preparation phase finished.
	Deployment phase started...
	Enabling credential delegation for NTLM on host machine.`
	`
	#text : false
	#text : true
	#text : true
	#text : false
	#text : true
	#text : Relaxed`


		[192.168.214.3] Connecting to remote server 192.168.214.3 failed with the following error message : The request is not supported. For more information, see the about_Remote_Troubleshooting Help topic.
		+ CategoryInfo          : OpenError: (192.168.214.3:String) [], PSRemotingTransportException
		+ FullyQualifiedErrorId : 50,PSSessionStateBroken
		[192.168.214.3] Connecting to remote server 192.168.214.3 failed with the following error message : The request is not supported. For more information, see the about_Remote_Troubleshooting Help topic.
		At C:\Program Files\WindowsPowerShell\Modules\CloudConnector\Internal\MtSetup.ps1:294 char:13
		+             Invoke-Command -ComputerName $machineIP -Credential $doma ...
		+            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
		+ CategoryInfo          : OpenError: (192.168.214.3:String) [], PSRemotingTransportException
		+ FullyQualifiedErrorId : 50,PSSessionStateBroken
		Trying to exit current manual maintenance mode.
		Successfully exit manual maintenance mode.
		[192.168.214.3] Connecting to remote server 192.168.214.3 failed with the following error message : The request is not supported. For more information, see the about_Remote_Troubleshooting Help topic.
		At C:\Program Files\WindowsPowerShell\Modules\CloudConnector\Internal\MtSetup.ps1:294 char:13
		+             Invoke-Command -ComputerName $machineIP -Credential $doma ...
		+            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
		+ CategoryInfo          : OpenError: (192.168.214.3:String) [], PSRemotingTransportException
		+ FullyQualifiedErrorId : 50,PSSessionStateBroken`

After some diging in to this problem i found some people having same issues with other Microsoft products. Last March Microsoft released the CredSSP update and this prevented connecting to vulnerable systems using older authentication methods.

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Factory Reset Audiocodes Mediapack 112 by Shell

Problem

I came across a problem that it was not possible to change the IP address of the MediaPack 112.

The IP Address, subnet and default gateway are greyed out as you can see in above image.

Solution

Go the the webinterface (System, Management, Telnet/SSH Settings) and enable SSH access.

Use PuTTy to connect to the current IP Address of the MediaPack. Use the default credentials if not changed: Admin - Admin

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