[cisco-voip] Dropping RTP packets?? (Kevin Dunn)

[Kristján Ólafur Eðvarðsson]

Hello Kevin,

Can you tell me if this voice quality issue is one way or both ways ?

I´m dealing with very similar problem with 2821 as h.323 voice gateway
connecting to PRI ISDN to Telco. There is sometimes oneway quality issues
for outbound calls where the called party is experiencing the same issue
that you mentioned. The IP phone user does not notice any voice quality issues.
I have a Cisco TAC case going on and some sniffing from the ethereal going on as the isdn debug and the PRI lines seem good.

regards. Kristjan Edardsson
Sensa ehf. Cisco Gold Partner
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Message: 2
Date: Tue, 25 Mar 2008 16:51:45 -0500
From: "Kevin Dunn" <cheesevoice at gmail.com>
Subject: [cisco-voip] Dropping RTP packets??
To: "Cisco Voice" <cisco-voip at puck.nether.net>
Message-ID:
        <84b74aec0803251451j5a7a943dlcaad11ed7d67afee at mail.gmail.com>
Content-Type: text/plain; charset="iso-8859-1"

I just spent the day recabling a cluster &^%$( wire closet at our remote
site.  H323 Gateway with 7 incoming FXO lines.  They had some static on the
lines that were clean at demark and noisy by the time they got to the 2821.
Now the lines are crystal clear (pat on back) but one line is now dropping
incoming packets (example: I say "1234567" they hear "12 45 7" it is
"sporatic and with the static so bad before it could have "always" been
happening.

On a side note thie one line is their 800# which sends all calls to IPCC.  I
am running CCM 4.1.3 (sr6) and the gateways is 2821 H323.

Voice-port configuration:

voice-port 0/1/1
trunk-group 1
input gain 3
output attenuation 1
no vad
connection plar 3999 (to IPCC)

I dont' think the issue is IPC, as there are three other lines that run the
PLAR 3999 command, and all work splendidly.

QUESTION:  How can I check dropped packets on one FXO port?
is it a debug scheme?

Thanks folks

Kevin
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