First, thanks for your reply.
Quote:
Originally Posted by boatman
Of course telnet uses TCP packets whereas your PAP2 is probably set to use UDP packets for SIP messages. Did any of your test programs use UDP packets?
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No, just TCP, to make sure these ports were not blocked (assuming most times, when the ISP blocks them, it's both TCP and UDP.), now how would you test UDP if you have no control over the other end, is there a way? I am under the impression that you send your UDP packet and it's gone (no ack...etc).
Quote:
Originally Posted by boatman
Have you used Wireshark to monitor packets to and from your PAP2?
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Yes, but I didn't learn much from it. I used sipsak to register on voxalot, and wireshark to observe the handshaking, I could see sipsak trying to register, but nothing coming back.
Quote:
Originally Posted by boatman
How do you know that your ISP has not switched from simple blocking of port 5060 to a more sophisticated deep packet inspection?
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I don't. I was just trying to eliminate one unknown, which is that the voxalot end is ok.
Chafik