http://www.acmepacket.com/default.asp
I know several large providers use them. I believe Verizon does.

On 4/13/2010 6:45 PM, Tony Graziano wrote:
> What the heck is an
> ACME. Was it installed by a long nosed tech name Wile E. Coyote?
>
>
> On Tue, Apr 13, 2010 at 7:25 PM, Josh Patten<[email protected]>  wrote:
>    
>> sipXbridge, the SBC built into sipX, should be handling this for you. Your
>> ITSP must be able to send the SIP traffic to port 5080 on your server.
>>
>> Shawn Westerhoff wrote:
>>
>> Thanks Tony,
>>
>> The SIP provider is O1 Communications in Sacramento, CA and they say they
>> can not support REFER method with the ACME (1000 I think) they are using.
>> We connect to O1 via private MPLS so no NAT is involved, no Internet.
>>
>> We are on 4.04. Are you saying we can change the method used to use INVITE
>> rather than REFER during a transfer?  That would be fantastic.
>>
>> On Apr 13, 2010, at 3:56 PM, Tony Graziano wrote:
>>
>>
>>
>> What version are you using? Who is the ITSP and what SBC are you using
>> to separate sipx from the Internet?
>>
>> sipXbridge is capable of doing that in 4.0.4 (current stable version),
>> with a properly configured firewall. 4.1.7 offers only minor
>> improvements to sipXbridge.
>>
>>
>>
>> On Tue, Apr 13, 2010 at 6:52 PM, Shawn Westerhoff<[email protected]>  wrote:
>>
>>
>> We use a SIP provider that can not handle REFER during a call
>> transfer.  We are seeking a way around this short of moving to 4.1.7
>> development release where we understand the issue has been fixed by
>> using a RE-INVITE (or INVITE again, not sure if RE-INVITE is even a
>> term we should be using).
>>
>> Our problem is with calls that originate on the PSTN, they get through
>> to the extension just fine (Polycom 650) but if that call is
>> transferred to any other extension, the upstream SBC drops the call.
>> This is a total showstopper as the Auto Attendant can't even direct to
>> extensions.  Our SIP provider says they have no solution.
>>
>> One solution we thought of was to use another SBC rather than the one
>> in SipXecs, OpenSBC.  Any thoughts on this would be appreciated.
>> Looks like we will try the developer release to confirm it fixes the
>> issue.
>>
>> --
>> Shawn Westerhoff
>> Turn 11 Networks, Inc.
>> [email protected]
>> direct: 415-300-4224
>> Professional IT Services / Cloud Computing / VOIP
>> www.turn11.com
>> _______________________________________________
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>>
>>
>>
>> --
>> ======================
>> Tony Graziano, Manager
>> Telephone: 434.984.8430
>> Fax: 434.984.8431
>>
>> Email: [email protected]
>>
>> LAN/Telephony/Security and Control Systems Helpdesk:
>> Telephone: 434.984.8426
>> Fax: 434.984.8427
>>
>> Helpdesk Contract Customers:
>> http://www.myitdepartment.net/gethelp/
>>
>> Why do mathematicians always confuse Halloween and Christmas?
>> Because 31 Oct = 25 Dec.
>>
>>
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>>
>>
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>>
>>      
>
>
>    

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