when you configure SiP /voip and it's not working, make sure to take note of the error message or codes so you would know what causes your SIP to not register successfully.

write down the code and check it here:

100 Trying
180 Ringing
181 Call Is Being Forwarded
182 Queued
183 Session Progress
200 OK
202 accepted
300 Multiple Choices
301 Moved Permanently
302 Moved Temporarily
305 Use Proxy
380 Alternative Service
400 Bad request
401 Unauthorized
402 Payment required
403 Forbidden
404 Not found
405 Method not allowed
406 Not acceptable
407 Proxy authentication required
408 Request timeout
409 Conflict
410 Gone
411 Length required
412 Conditional Request Failed
413 Request entity too long
414 Request URI (URL) too long
415 Unsupported media type
416 Unsupported URI Scheme
417 Unknown Resource-Priority
420 Bad extension
421 Extension Required
422 Session Interval Too Small
423 Interval Too Brief
428 Use Identity Header
429 Provide Referrer Identity
433 Anonymity Disallowed
436 Bad Identity-Info
437 Unsupported Certificate
438 Invalid Identity Header
480 Temporarily unavailable
481 Call leg does not exist
482 Loop detected
483 Too many hops
484 Address incomplete
485 Address ambiguous
486 Busy here
487 Request cancelled
488 Not acceptable here
489 Bad Event
491 Request Pending
493 Undecipherable (Could not decrypt S/MIME body part)
494 Security Agreement Required
500 Internal server error
501 Not implemented
502 Bad gateway
503 Service unavailable
504 Gateway timeout
505 Version not implemented
513 Message Too Large
580 Precondition Failed
600 Busy everywhere
603 Decline
604 Does not exist anywhere
606 Not acceptable


Jenny Andrews
Nomado Telecom