How does LRN SIP INVITE work?
Step 1: Login to our portal and go to Interconnection -> Host Add to add your source IP address
Step 2: Please wait 2-3 minutes so the new IP could propogate to all of our
Step 3: From your source IP entered in step 1, issue a SIP INVITE to
lrn.bulkcnam.com on port 5061 (not 5060)
Step 4: You will receive the following response. In this case, the LRN
response for 3109060901 is 12132620105
If you have any questions please do not hesitate to call us at
3109060901 or email firstname.lastname@example.org.