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adrian..p
Beginner

Cloud SIP -ASA5515- Phone Call No Sound / Conn over RTP ports Drop

Hi Guys,

We have an issue where we make/receive a phone call and we have no sound. After 15 seconds the call drops

 

Here is our configuration:

-SIP provider = Cloud SIP (no MBX on site)

-Phones are operating on the LAN subnet

-We have 2x ASA 5515x in HA mode and a Firepower virtual appliance

 

Phone provider needs/recommends:

-SIP inspection disabled

-RTP ports 16384-32767 open

 

+we disabled sip inspection and attempted to make all sorts of changes to allow RTP outbound but the behavior remains the same. If we look at the real-time log viewer, the message we see is:  

Syslog id: 434002 ; Description: SFR requested to drop UDP packets from inside <ip of phone>/<RTP port> to outside <ip of sip provides>/<RTP port> (see screenshot)

 

I'm suspecting that this problem might be caused by the Firepower appliance; however, I am not sure what policy i need to create ensure the phone can make a call

 

Does anyone have any experience with this? any help would be appreciated

Cheers!

 

A.P.

1 ACCEPTED SOLUTION

Accepted Solutions
marce1000
VIP Advisor
2 REPLIES 2
marce1000
VIP Advisor

Thank you! It's a step in the right direction!