Ask the Expert: Cisco Expressway

[Monica Lluis]

This session will provide an opportunity to learn and ask questions Cisco Expressway and features such as Mobile Remote Access (MRA), DVO-R, Cisco Jabber Guest and B2B.

Ask questions from Monday, April 4 to April 15, 2016

Featured Experts

Aditya Gupta comes from Backbone TAC UC Team background where he worked on troubleshooting on the UC products. Currently working with Cloud and Managed services and handling the key accounts for Cisco in Unified collaboration and Telepresence domain and He holds Cisco Certification  CCIE (#44733) in collaboration.

Aashish Dua is Network Consulting Engineer with Cisco Advanced Services and works in Cloud Collaboration( HCS) domain, prior to this, he worked as technical lead for CUCM team for TAC Backbone Centre in Bangalore and successfully catered to Complex troubleshooting scenarios and customer escalations in unified communications.
He holds special interest in Unified Collaboration domain and Virtualisation, he is a CCIE collaboration and a technology enthusiast.

Find other  https://supportforums.cisco.com/expert-corner/events.

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[ashishsurve]

Dear Team

This is what we found in expressway 8.6.1 release. Can you make us understand more on this by giving practical scenario. We are currently dialling cmr by URI such as 12345@cmr-em.webex.com

"License Bypass for Calls to Collaboration Meeting Rooms (CMRs)

The Expressway no longer requires
rich media session
licenses for calls to and from cloud-based CMRs. This includes SIP calls between Collaboration Cloud and the CMR Hybrid solution.

Note:
This only applies when the dialed string does not need transformation on the Expressway (for example, user@sitename.webex.com)."

[Aditya Gupta]

Hi 

By definition Rich Media Session License are :

Required for concurrent calls to/from any endpoint or application not registered to Cisco Unified Communications Manager. For example, business-to-business calls, Cisco Collaboration Meeting Rooms, Cisco Jabber Guest, and interworked calls, for example, H.323 to SIP, H.264 AVC to H.264 SVC

This would include calls to CMR, pre expressway 8.6 release.

But from x8.6 onwards , calls to/from cloud based CMR would no longer consume any RMS licenses.

Thanks 

Aditya Gupta

[Rajkumar Yadav]

Hello Aditya/Aashish,

Hope you guys doing great.

I would like to know about the Expressway deployed with SME cluster.

As what i understand that sip line registration will go to the leaf cluster for MRA functionality.

It will use the home cluster option for identifying the user along with ILS ?

OR 

We will be using the partition UC services with multiple deployment on expressway.

What if two cluster have same domain, how this will work.

Also please let me know the internal SRV records in SME environment.

____________________________________________

Coming to B2B setup on expressway with SME.

Is the best design to have the ad hoc Trunk direct to conductor from leaf cluster and for rendezvous leaf cluster should point to SME cluster and SME will then send to conductor.

Could you please the call flow and will this be good solution considering my bandwidth requirement would be high if the vTS and Conductor are placed in Data center.

Regards,

Raaj.

[Aashish Dua]

Hello Raaj,

Apologies for delay in responding.

For the first question, it will be UDS service that will locate the home cluster.

the B2B can be achieved via different design depending on the existing infrastructure and design in place, the CVD document presents the scenario in detail, below is the document,

CVD_B2B.

Please refer to the exclusive section for business to business communication, it talks about various call flows and scenarios with different border elements as well.

hope it helps.

please do reach out if you have any specific question.

Thanks,

Aashish

[Rajkumar Yadav]

Hi Aashish,

Thank you for the reply.

One precise query, assume i have 2 CUCM cluster and 1 SME cluster.

In this scenario the domain is same all around then the internal SRV record should point to SME or CUCM ? how about cup login records. ( only internal here)

_______________________________________________________

How the "Multiple deployments to partition Unified Communications services" will work if the domain is same for all cluster ?

Will the EXP-C will check all cluster one by one ? ( external request here)

http://www.cisco.com/c/dam/en/us/td/docs/voice_ip_comm/expressway/admin_guide/Cisco-Expressway-Administrator-Guide-X8-7.pdf

Regards,

Raaj

[Aditya Gupta · Accepted solution]

Hi Rajkumar

The response to your query highly depends on how you want to design your environment.

In case you are looking at your SME as entry and exit points to your Expressway solution, then yes you can point your SRV records to your SME only and then have ILS connections between SME and Leaf clusters. You can also deploy internal jabber login in similar way.

You can find more details here :

http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/srnd/collab11/collab11/trunks.html

Regards

Aditya Gupta

[Rajkumar Yadav]

HI Aditya,

Thank you for the reply and link.

So in this scenario i have to put the user in SME cluster too without checking the home cluster.

How CUP login will work i think this cannot be centralized as voicemail and this need to be per cluster as it tracks the user state.

We do require to create the cup login record for expressway solution.

Please refer the Fig 6-24 and related theory.

Regards,

Raaj

[taolaayan]

Hello Team,

I would like to know if I need to deploy two separate clusters of expressways to use both MRA and Jabber Guest feature.

Thanks,

Tola

[Aditya Gupta]

Hi Tola

Yes, you need separate clusters to use both MRA and Jabber Guest.

Unsupported Expressway Features and Limitations When Using Mobile and Remote Access

■ The Expressway cannot be used for Jabber Guest when it is used for MRA

http://www.cisco.com/c/dam/en/us/td/docs/voice_ip_comm/expressway/release_note/Cisco-Expressway-Release-Note-X8-7.pdf

Thanks 

Aditya Gupta

[V.Naveen Kumar]

We have CMR in cloud and have Cisco Expressway MRA as well.

We are planning to integrate CMR Cloud with our CUCM & Expressway MRA.

We have configured SIP trunk for CMR cloud and sip route pattern for the same. When we dialing video conferencing number like (userid@xxx.webex.com) we are getting ringback tone but it is not connecting to the video.

Do we have to do any configuration with Cisco Expressway ?? Do we have any document to integrate CMR Cloud ??

[Aashish Dua]

Hello Naveen,

below document talks about the integration,

http://www.cisco.com/c/dam/en/us/td/docs/telepresence/infrastructure/solutions/cmrcloud/CMRCloudEnterpriseDeployment.pdf

hope this helps.

Thanks,

Aashish

[Jean Paul Enerst]

Hi Gents,

First of all, thank you for answering my request here...

I have deployed RMA and it works fine... However, now i want to take things one step further. I have ordered some Rich media license which i have installed. But i still can't make B2B calls. I have tested with these Cisco tests: loopback@cisco.com, loopback@rtp.ciscotac.net and 64.102.241.236. One thing, i need to add the SX10 that i test with is registered in CUCM and was deployed recently in standalone.

In any of these tests, the calls did not connect. And of  course, i do have a SIP-TRUNK from CUCM to Expressway-e, and do have a route pattern which uses that SIP-TRUNK.

Do you guys have any recommendations or troubleshooting tips?

Thanks,

[Aashish Dua · Accepted solution]

Hello Jean, Thanks for reaching out, i can suggest below pointers for troubleshooting,

1. what is the user experience when you call, does it plays reorder tone or is it dead silence?
2. for the basic call flow troubleshooting, you can use the call manager's real time trace in RTMT to check if the call is hitting to next hop, as it is all SIP, so plain text.
3. from the expressway logs, you may want to check the "event logs" to see if the call is hitting and if expressway routing it out.
4. more detailed logging can be enabled in diagnostics logs, but please disable them post your test call is done as it will eat up resources on expressway VM.

hope above pointers will help you but please do share some specifics from log if you find any anomaly.

look forward to hear from you.

Thanks,

Aashish

[Nattawut Boonpramook]

Hi Aditya, Aashish

I have TP endpoints registered with VCS-C.

Can I create Traversal trunk between VCS-C and Expressway-Edge and allow incoming/outgoing call from Internet ?

Best Regards, 

Nattawut B.

[amine.saim]

hi

my request is very simple

i need to identify quickly the switch needed by my customers by giving specs of it

ex : 24 ports 10/100/1000, 2 ports sfp, 8 poe

how can I know the best choice for this configuration

thanks

regards