ASA5505 - Qos / Priority / Traffic Shaping - VOIP/SIP

[Entuitesi]

I have a client using a VOIP service to a third party provider (RingCentral). They are connected via Cable ISP (6mb) to the Internet and now experiencing performance issues with their VOIP service. They indicated that the call can be heard but that there is jitter and choppines in the call and they have to place a regular landline call. Their provider recoomended using QOS to help improve. I did not see anything straight forward on the ASDM interface to do this and figure it may require command line to accomplish.

They have Cisco IP 303 and 5252G2 phones which connect through an ASA5505 7.2(4) to their provider for service. Apparently the voip app uses the following ports:

UDP

5060-5090

8000-8200

16384-16482

What would be the best solution to improve performance or perhaps traffic shape / priortize traffic to help. I assume this may be happening if there are heavy downloads or activity happening on the network. The ASA5505 is on 7.2(4). I'd appreciate if someone could provide some coded examples for the above info.

Much appreciated!

[varrao]

Hi Vito,

You can prioritize your voice traffic over data traffic, refer to this doc for prioritization:

http://www.cisco.com/en/US/products/hw/vpndevc/ps2030/products_tech_note09186a008084de0c.shtml#Pqu

Hope that helps

Thanks,

Varun

[sdevine1979]

What did you end-up implementing for configurations for this solution. I have attempted to work with RC on a Cisco ASA configuration but haven't seen much consistency in their response to the point where I feel comfortable with the changes they suggest. 

Did you end-up implementing a QoS policy?

How did you handle the need for "port triggering"?