Mark,
You will want to provide the name of the ITSP, the model of phones you are using, and the version of firmware they are running on. Brand of router can be helpful as well. Do a search on the wiki at wiki.sipfoundry.org and look up the page on the sipviewer. It will have instructions on its use. There are instructions on the site or doing a call trace, which can then be viewed in sipviewer. From: [email protected] [mailto:[email protected]] On Behalf Of Mark Roseboom Sent: Tuesday, February 07, 2012 10:55 AM To: [email protected] Subject: [sipx-users] On Hold Fails for Inbound Calls through SIP Trunk Using sipXecs 4.4. Inbound and outbound calls work with my ITSP. Placing a call on hold works when calling any internal extension. On hold also works when making an outbound call through SIP trunk. However when an inbound call comes in, and its placed on hold, the call is dropped. Thinking it must be a NAT / firewall issue. Not sure what other diagnostics to give, please let me know. Thanks. Mark
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