Optimizing VVX deployment with pre configured configuration files.


While ago I posted an article explaining how to use the configuration files to deploy and configure VVX devices over a provisioning server. If anyone who used the .cfg files on the provisioning server might realize that, there are lot of parameters to be configured so the the device deployment can be streamlined and make it more user friendly in the process.

In this article, I have shared a set of pre configured ans optimized .cfg files that can be used with any Lync server deployment. Granted that some of the parameters need to be changed according to the environment and I will explain what need to be changed and why.

There are 6 configurations files all together which address different segment of the device configuration.

Starting with Device.cfg. This configuration file set to configure following parameters in VVX device,

  • Set Device Base Profile as Lync
  • Change default administrator password (In version 5.1.1 Revision B, Device comes up with warning message if the Administrator password remains as default)
  • Enable Device update
  • Specify device update location
  • Time server configuration

The Feature.cfg file specify the common set of features on the device such as, Call lists, Miss call alerts, Contact Directory. In this file, the specified parameters are below,

  • Removed the “Corporate Directory” option on the device. Within “Directory”, the device will have “Lync Directory” option so that the contacts can be searched and called. In many cases, I have seen users get confused with two different set of directory options hence removing the “Corporate Directory” option
  • URI Dialling disabled. VVX generally have URI dialling enabled. When this feature is enabled, all inbound and outbound calls display as the full SIP URI (sip:+6123456789@contoso.com.au). Users who are used to have legacy PBX end points does not like this at all. They want to see just the number or the name without any other information

Sip-Interop.cfg is the most important one. This one controls the device registry intervals as well as the SIP Proxy server related parameters. In this configuration file, most of the parameters haven’t changed. But, the ones that were changed are below,

  • Device registration expiry interval. Default device registration expiry interval is 3600 seconds. If the devices is registered in an SBA, then if the SBA goes down, the devices still shows as signed in but, it actually be in an unknown condition till the registration expires. Have 3600 seconds is too much in that scenario. In this configuration file, the interval has changed to 120 seconds. This cannot be less than that. If it’s less, then users will experience the frequent device sign in and sign out.
  •   VOIP Server configuration. Here, the VOIP server interoperability is set to Lync 2010 and the transport method is set to TLS.
  • SDP early media disabled. I have noticed when this parameter is enabled, device sometimes does not provide a ringing tone to the end user. The dialled call will be blank till it get picks up.
  • Apply Digitmap Locally. Enabling this parameter will make the device to adhere to the Lync server normalization rules which are assigned to the user.

The Site.cfg file is configured to set daylight saving time in to the device. If the daylight saving is applicable, the start and stop times need to be configured,

  • SNTP address of the time Server
  • Daylight saving enable or disable. If enabled, start and stop times

Lync.cfg file configured to set BToE enabled. But, in version 5.1.1 Revision B, Polycom have set the BToE as disabled and given that the configuration file version is 5.2, this configuration file doesn’t really enable BToE on version 5.1.1 Revision B firmware. But, it can be used on Version 5.2.

The Cer.cfg is set to import the root CA in to the device. 90% of the devices that I have deployed were able to get the certificate without uploading manually. In case the device fail to pick up the certificate, copy and paste the hash file of the CA certificate in to the configuration parameter.

Finally, the Master configuration file 000000000000.cfg. All the above mentioned configuration files are specified in this master configuration file. When the device boots up, it will fetch the configuration mentioned on this files and get configured based on parameters which are configured on each sub configuration file.

The configuration files can be downloaded from, https://onedrive.live.com/redir?resid=6329AF91D1E5ADBC%21704

Follow my other article if you are new to the VVX setup. https://thamaraw.com/2014/04/02/configuring-the-provision-server-to-setup-polycom-vvx-devices-to-support-lync/

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