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[Image removed by cease-and-desist order from Pillsbury.]
The first SIP interoperability test event took place at Columbia University on Thursday, April 8th and Friday, April 9th, 1999. The purpose of the interoperability test event was to test for interoperability of SIP implementations, determine the source of incompatibilities, and if the specification is at fault, prepare a "fix" for the draft revision.
Pizza provided by .
The following organizations attended:
| 3Com |
| AT& T |
| British Telecom |
| Cisco |
| Columbia University |
| Dialogic |
| dynamicsoft |
| Ellemtel |
| Ericsson |
| Helsinki University |
| Hewlett Packard |
| Bell Labs, Lucent Technologies |
| MCI |
| Mediatrix |
| Nortel |
| Pingtel |
Last updated by Henning Schulzrinne