Edgewater 4300t router and teliax/voicepulse

Hi all,

Anyone had any problems connecting to voicepulse or teliax through an edgwater 4300t router. I had a problem with voicepulse and we decided it was an incompatibility with our router so decided to try another SIP proxy provider, but still cannot get SIP to register - get the error in the messages log file:-

[Mar 14 09:38:54] NOTICE[2558] chan_sip.c: – Registration for 'robert.mcnaught@voip-co3.teliax.com’ timed out, trying again (Attempt #14)

Many thanks