Hi,
I have got a very strange issue. If anyone has any idea about it please help!
We had moved from traditional isdn link to SIP and it is working fine but sometimes some of the phones cannot dial outside numbers(Mobile, 1300 and landline). On the other hand, same model phones are working fine no issues. When I checked in Cisco RTMT about why some phones with same models are working and other phones with exactly same model are not working I found that from call manager it is only sending invite messages that's it. I do not understand why this is happening. Please see attached RTMT file for working and problem phone. Any help will be greatly appreciated.
Thank You,
Kind Regards
Rohit.