4300 Series Routers Bugs

Having deployed a number of the new 4331 routers to replace 2800 series routers as voice gateways, there's been some quirks...

The first being that unicast music on hold stopped working. Identical configuration to the 2800 routers, but PSTN callers just hear silence. Eventually found that setting the CallManager service parameter Duplex Streaming Enabled to true fixes this problem:

I also hit a nasty bug in that 4000 series IOS XE releases 3.15.0, 3.15.1 & 3.16.0 aren't fit for purpose as voice gateways, whenever the router reloads the dial-peer configuration (along with NBAR & some ACLs) disappears. Why these versions aren't deferred releases yet I don't know?!

UPDATE: Now to cap it all off the 4300 series is undergoing a recall.

Unhelpful Error Messages

This error message appeared after trying to restart a CUCM server via the OS Administration GUI. Where is the Save button that it refers to?!

Deleting Unity Connection Locales

Unfortunately Unity Connection has suffered a number of bugs relating to locales, including:

• Certain 8.5 versions of the UK English locale breaking the ability to leave voicemail messages
• Some versions of 8.5 & 8.6 unable to have upgrades installed if a non-US English locale is installed

The solution to either of these problems is to remove the locale which has to be done via the CLI.
First check which locale is installed use show cuc locales:

admin:show cuc locales

Installed Locale Package    Locale
--------------------------  ------
uc-locale-en_GB-8.6.2.1-12  en-GB

Next stop the Connection Conversation Manager & Connection Mixer services via the Cisco Unity Connection Serviceability GUI. Then delete the locale with delete cuc locale:

admin:delete cuc locale en-GB

en-GB uninstalled

You can then install whatever updated locale, upgrade patch, etc. is required to resolve the locale issue.