[Serusers] Communication Problem btw SER and User Agent

[Adeyeye O. Michael]

Hi,
Here is an indication that my SER is running:
micadeyeye at asmicom:/usr/src/Research-Progress$ ser
Listening on
             udp: 127.0.0.1 [127.0.0.1]:5060
             udp: 196.24.224.76 [196.24.224.76]:5060
             tcp: 127.0.0.1 [127.0.0.1]:5060
             tcp: 196.24.224.76 [196.24.224.76]:5060
Aliases:
             tcp: asmicom.local:5060
             tcp: localhost:5060
             udp: asmicom.local:5060
             udp: localhost:5060

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But each time I tried connecting to it from a USER AGENT (ZAP, 
UCTIMSCLIENT), it doesn't interact with the client. I checked my 
dump(via wireshack) but only REGISTER messages are sent with no reply 
from SER.

Can anyone help me? I have both SER and client sitting on same PC (using 
same port-5060).