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#491348 06/22/11 02:23 AM
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adrianw Offline OP
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Has anyone ever had a problem with using the MGCP IP Phone over FIOS? The problem we are having is IP phone to IP Phone is working. Once the IP Phone tries to make a call to Voicemail, another phone or grab dial ton only have one way audio. I can hear them but they cannot hear me. We are using unfettered Internet. As a proof of concept have move the IP Phones and PUGW card to the internal MPLS network (No restrictions) and everything works fine. At this point i am not wanting to go through the exercise of creating tunnels for all the users to be on private network so we can control the port numbers. (30 users times 30 routers will take a while and be costly)


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#491349 06/22/11 06:13 AM
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Do you have a sentinel installed?

#491350 06/22/11 12:15 PM
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adrianw Offline OP
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No sentinel installed. The other 2 sites work perfectly well, one is IP T-1 and the other is Metro E.


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#491351 06/22/11 04:02 PM
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So let me get this straight. You are using IP on an internal LAN vs phones at home on the internet? Understand I count VPN as on the "network".

#491352 06/22/11 08:13 PM
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adrianw Offline OP
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I want to use this for External Phones (work at home people) however i continue to have problems with FIOS, so as a test to verify the integrity of the equipment moved everything internal and it is working fine. Then placed it back on the external and only Ip Phone to IP Phone works consistently. However when the IP Phone utilizes the MRC card for resources like dial tone or calling a TDM phone i only have one way audio. For example i am on the IP phone and call someone (for example phone call, with dial tone) I can hear them but they cannot hear me. I believe the problem to be FIOS, however there is a communication barrier as in I am telling them they are blocking some ports they refuse to acknowledge this, have verified with a sniffer with Tadiran. Just need to know what the buzz words are with Verizon to tell them to open up the ports or just don't block the high number ports. They aren't very understanding, so need to speak their lingo. We have several VoIP applications working in other parts of the country, we just so happen to be having this problem in Verizon territory. The VPN idea is a long shot in that I can create tunnels to everyones house my preference is to not do this because then i need to purchase 20+ routers/inexpensive firewalls for phone calls.


Adrian
#491353 06/23/11 12:45 AM
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Well if you get it working let me know. This is why they made the sentinel. I have never gotten it to work the way you are attempting to do this without putting the card on a public ip outside the internal network. Of course using one public ip for signaling and one for mrc. I think you are failing to have a routable mrc path because nat tranversal has no way to route that call the way you're trying to do this.

#491354 06/23/11 02:27 AM
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adrianw Offline OP
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I am placing the PUGW card on the public Internet, Signal/Media both utilize a public IP. No interest on having this card on both, we have too many compliance requirements i physically segment Public & Private. I have this working at 3 other sites, only difference is not using FIOS, have it working with Cable modem as a backup.


Adrian
#491355 06/23/11 05:56 AM
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Do you have the cards set to different zones? Also, it will not support multiple phones coming from one public ip this way FYI. I would check to see if udp ports 3000+ etc are being blocked somewhere.

#491356 06/27/11 03:58 AM
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Wouldn't that be ports 16400 and up?

#491357 06/27/11 05:19 AM
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I usually do 3000+ and 16400+ and up as well as 2427.

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