Jabber fast busy when using expressway

[esa_fresa]

Hi All, 

When any of our users make calls from Jabber through Expressway, they get a fast busy. If the users connect to vpn instead of using expressway, there is not an issue. 

All users and all numbers are affected with the exception that a few numbers, all of them being in a specific area code that's local to where our users are calling from, do work.

The issue is not intermittent or random. If a number can be called, it can always be called (and vice versa).

Any help is appreciated.

[Chris Deren]

Can they dial internal calls or does it fail for all calls internal and external?

[Austin Lutz]

I'm hitting the same issue. Not able to dial internal or external, but phone services registers. All I get is a fast busy tone when placing a call.

[esa_fresa]

Hi Austin, We increased the hop count from 15 to 70 on both expressways C and E to resolve our issue.

[Austin Lutz]

Is that on all zones?

I increased ours as well, but am still getting the same issue. Require a reboot or anything? 

[Austin Lutz]

This has been resolved. Turns out..another guy I work with setup the Expressway-C for use with Microsoft Lync B2BUA to test with. I overlooked it on the initial config.

This was causing all sorts of SIP signaling issues. Turned that off and we're in business.

[anshumansingh45]

Hi Austin,

just a basic question.. what do we need to configure on the cisco jabber android client to use the expressway solution rather than connecting through VPN..???

[Chris Deren]

There is nothing you need to do on the client, it is all DNS driven, so you need proper DNS srv collab-edge records pointing to your Expressway-E server(s).

This is all described in Expressway deployment guide.

[Austin Lutz]

Thanks Chris! The biggest thing is getting them right and ensuring your internal DNS can't resolve the collab edge record. 

[Austin Lutz]

Check out my blog post. This walks you through step-by-step.

http://blog.cloverhound.com/2015/09/03/cisco-expressway-the-first-step-towards-a-vpn-less-enterprise-part-2/

[Austin Lutz]

You will also need a BOT device in CUCM. This is essentially just creating another phone that gets tied to the end user. iPhones are TCT, Android is BOT. I've posted the guide below on what you'll need, but its pretty straight forward. Search for "BOT evice Configuration Settings"

BOT Device Configuration Settings

http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/jabber/10_5/CJAB_BK_D6497E98_00_deployment-installation-guide-ciscojabber/configure_voice_and_video_communication.html#JABA_RF_BE0050B3_00