Jonathan D. Rosenberg. Obtaining and Using Globally Routable User Agent URIs (GRUUs) in the Session Initiation Protocol (SIP). RFC, 5627:1-40, October 2009. [doi]
@article{rfc5627, title = {Obtaining and Using Globally Routable User Agent URIs (GRUUs) in the Session Initiation Protocol (SIP)}, author = {Jonathan D. Rosenberg}, year = {2009}, month = {October}, doi = {10.17487/RFC5627}, url = {https://doi.org/10.17487/RFC5627}, researchr = {https://researchr.org/publication/rfc5627}, cites = {0}, citedby = {0}, journal = {RFC}, volume = {5627}, pages = {1-40}, }