[Serusers] Restriction on port number??

Hi everyone, I had a basic question about SER. Is there a restriction that we have to bring up SER on port number 5060 only? When I tried changing the port number in the ser config file, ser comes up normally, but it doesn't answer the REGISTER message from the UA. I am using XLite as a UA and bringing up the ser on port 7065. Any pointers as to what can be reason for this? Cheers, Pankaj Munjal Automation - Nortel Networks Wipro Technologies, Bangalore. ESN : 6-877-5666 PBX: 080- 28520408, Extn:- 83265 Confidentiality Notice The information contained in this electronic message and any attachments to this message are intended for the exclusive use of the addressee(s) and may contain confidential or privileged information. If you are not the intended recipient, please notify the sender at Wipro or Mailadmin(a)wipro.com immediately and destroy all copies of this message and any attachments.