Hi,We use Cisco 2901 as a tested product to convert SIP to ISDN so we can use this technology with Legacy PaBX's.We have never come accross this problem, but when dialling out it takes 10 seconds to make the call. In a trace we case the router ISDN s...

Hello,We have a cisco 2901 which is connected into a SIP vendor and then converts to ISDN 30 which uplinks into a traditional PaBX system.Internal calls work absolutly fine as well as external calls.The issue comes when we happen to set a call forwar...