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New Member

"Media Inactive Detected" problem

I am having problem on on-net VoIP calls where the call setup is allright but no audio is passed. The output from "sh call act voi brief" is:

11F2 : 60 -1983049246ms.59 +13570 +29150 pid:2 Originate 1075577

dur 00:00:15 tx:1414/28280 rx:1415/28300 10 (normal call clearing (16))

IP 172.21.124.235:26294 SRTP: off rtt:239ms pl:27180/0ms lost:0/2/0 delay:60/60/70ms g729r8

media inactive detected:n media contrl rcvd:n/a timestamp:n/a

11F2 : 59 -1983049246ms.60 +13570 +29150 pid:100 Answer 8983456

dur 00:00:15 tx:1415/28300 rx:1414/28280 10 (normal call clearing (16))

Telephony 1/0/1:23 (59) [1/0/1.23] tx:27260/27260/0ms g729r8 noise:-84dBm acom:45dBm

Has someone encounter this problem or would like to share the possible solution? thanks

10 REPLIES
Silver

Re: "Media Inactive Detected" problem

Make sure there are no IP routing issues in your network.

Regards,

Anup

Silver

Re: "Media Inactive Detected" problem

That media inactive detected stuff is n and n/a because you are not using it, it is a different feature that you can use for some things, if you activate it - i have never messed with it, but that stat is a red herring. My vote goes with a routing issue, that is the cause of one way voice 98% of the time, unless you have a dsp issue - which we have seen more of lately, but you should see errors in the log about that, and most often you will see that after things work for a while, and then stop. If you have an h323 gateway, make sure you are using h323-gateway voip bind srcaddr ip_address, and if it is mgcp gateway, if you have a loopback address built, the mgcp and rtp packets will source from that address, make sure it is routeable from your endpoint.

Mary Beth

New Member

Re: "Media Inactive Detected" problem

The call can ring the other side but when we pick up the phone, nothing is heard. IP and Call routing are in place correctly. We are using CME 3.2 and have enable some features like: rtp send-recv, codec class with options of g729r8 and g711ulaw, and call fast start. ANy other possibilities? thanks

Silver

Re: "Media Inactive Detected" problem

Well, just because the ring gets there does not mean that the rtp packets get from there back to you - so if you call the phone, the other party hears it ring and picks up and says hello, and you do not hear anything, then that could still be a routing problem. The other thing we have seen more often lately is problems caused by rtp header compression - like someone runs autoqos on a router on one side, not realizing it would enable that, and the other side does not have it enabled. Also we have had some brand new code that has trouble with rtp header compression, it will work fine for a while, and then you just randomly lose audio, we did not really need it so just disabled it and things were fine. But, if this is CME, what kinds of calls are you having this problem on, phones local to the CME calling where? One thing we ran into with CME specifically was that you need to make sure that every dial peer in the path has VAD disabled.

Mary Beth

New Member

Re: "Media Inactive Detected" problem

thanks for your comments. I did some tests as follow:

- extended ping from CME H323 IP (loopback) and from local voice int to the gatekeeper without any issue. Would this confirm the correct routing?

- offnet calls (incoming and outgoing local, LD and IDD PSTN) - no problem. The IDD PSTN only being seized whenever communivation with gk failed (lowest preference).

- IDD on-net via telco which is routed to a global gateway for off-net -> no problem (audio can pass through).

- site-to-site on-net -> NO AUDIO at both sides.

Tried to isolate the problem with the above tests, but still no clue.

New Member

Re: "Media Inactive Detected" problem

here is voice config (partial). The GK is a softswitch and it is not using "session target ras" command as Cisco GK does.

voice-card 0

dspfarm

dsp services dspfarm

!

voice call send-alert

voice rtp send-recv

!

voice service voip

allow-connections h323 to h323

allow-connections h323 to sip

allow-connections sip to h323

allow-connections sip to sip

no supplementary-service h450.2

no supplementary-service h450.3

h323

h450 h450-3 timeout T1 1500

h245 tunnel disable

!

!

!

voice class codec 1

codec preference 1 g729r8 bytes 40

codec preference 2 g711ulaw

!

!

!

voice class h323 1

h225 timeout tcp establish 3

telephony-service ccm-compatible

ccm-compatible

!

dial-peer voice 203 pots

corlist outgoing pstn

tone ringback alert-no-PI

destination-pattern 9T -> for local and LD calls

progress_ind alert enable 8

progress_ind progress enable 8

direct-inward-dial

port 0/1/0:23

!

dial-peer voice 30 voip

corlist outgoing pstn

translation-profile outgoing LD

preference 1

destination-pattern 9T

progress_ind setup enable 3

voice-class codec 1

voice-class h323 1

session target ipv4:x.x.x.x (GK Proxy address)

dtmf-relay h245-signal

no vad

!

dial-peer voice 113 voip

corlist outgoing pstn

translation-profile outgoing strip1or9

preference 1

destination-pattern 9001T (IDD onnet- primary path)

progress_ind setup enable 3

voice-class codec 1

voice-class h323 1

session target ipv4:x.x.x.x

dtmf-relay h245-signal

ip qos dscp cs5 media

no vad

!

dial-peer voice 213 pots

corlist outgoing pstn

tone ringback alert-no-PI

preference 5

destination-pattern 9001T (IDD offnet if via onnet failed)

progress_ind alert enable 8

progress_ind progress enable 8

direct-inward-dial

port 0/1/0:23

prefix 001

New Member

Re: "Media Inactive Detected" problem

this issue is because of routing make sure routing is in place i m sure it will work.

Silver

Re: "Media Inactive Detected" problem

I believe the gatekeeper will make the decision on the call routing, and then send the destiniation address for the actual rtp stream back over to the call originator, so the ip connectivity/routing has to be verified between the two endpoints. Are these two ip phones? If one device is registered to your CME, what is the other side, and where in relation to the originator?

Mary Beth

Silver

Re: "Media Inactive Detected" problem

Also, the peers being matched in your first sample output were 2 and 100 - what do those looks like?

New Member

Re: "Media Inactive Detected" problem

I did some tests as follow:

- extended ping from CME H323 IP (loopback) and from local voice int to the gatekeeper without any issue.

- IDD on-net via telco which is routed to a global gateway for off-net -> No Problem (audio can pass through).

Would this confirm the correct routing?

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