[Asterisk-Users] Beeps during Sip to Sip phone calls

[Me]

I keep hearing DTMF type beeps when on phone calls, I know this is some sort 
of trait of VOIP but it's driving me nuts..

I noticed that it happens MUCH more when I am on the phone with one 
particular person.

We are using SPA-2000's from Sipura on both ends.

Tonight I was looking at the CLI (*command line interface) while I was on 
the phone with this person.

Each time I heard a beep, I saw at EXACTLY the same time the following line:

    -- Attempting native bridge of SIP/206-5286 and SIP/109-fbf7

What's wierd is that we were already on the phone, I was 206 and he was 109. 
Does this give anyone a clue as to what might be happening here?

I also saw a bunch of these but not sure if it was related to our call or 
not.

Apr  6 21:16:03 NOTICE[3587]: rtp.c:430 ast_rtp_read: RTP: Received packet 
with bad UDP checksum
Apr  6 21:16:05 NOTICE[3587]: rtp.c:430 ast_rtp_read: RTP: Received packet 
with bad UDP checksum
Apr  6 21:16:39 NOTICE[3587]: rtp.c:430 ast_rtp_read: RTP: Received packet 
with bad UDP checksum
Apr  6 21:16:41 NOTICE[3587]: rtp.c:430 ast_rtp_read: RTP: Received packet 
with bad UDP checksum
Apr  6 21:16:44 NOTICE[3587]: rtp.c:430 ast_rtp_read: RTP: Received packet 
with bad UDP checksum
Apr  6 21:17:03 NOTICE[3587]: rtp.c:430 ast_rtp_read: RTP: Received packet 
with bad UDP checksum
Apr  6 21:17:10 NOTICE[3587]: rtp.c:430 ast_rtp_read: RTP: Received packet 
with bad UDP checksum


Thanks!

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