Dear,I have same an issue, customer need to send voice message to ext 4440 and play gretting say if u have any suspect or an issue record ur voice and the voice should go to group of user..Can i know how to do it

Dear,  Can i know which command is useful to troubleshoot e1 r2 issue for incoming and outgoing. And understand the debug. 

Dear, Thank you for your replay.. We have 2 senior one is that, who are using jabber or ip phone 7841 they have one way issue, other who are using 7942 no issue with them.Please need you update.  

Dear,Thanks for your support, do u mean i have to check firewall

Dear,  I have the same issue is there any soulation for this..