Session Initiation Protocol RFCs:
1847, 2045, 2046, 2047, 2048, 2198, 2327, 2543, 2616, 2617, 2633, 2733, 2791, 2833, 2848, 2959, 2976, 3087, 3050, 3204, 3219, 3261, 3262, 3263, 3264, 3265, 3266, 3310, 3311, 3312, 3313, 3319, 3320, 3321, 3322, 3323, 3324, 3325, 3326, 3327, 3329, 3361, 3351, 3372, 3388, 3389, 3398, 3407, 3420, 3428, 3455, 3468, 3485, 3515, 3550, 3551, 3555, 3556, 3605, 3606, 3608, 3611, 3702, 3711, 3725, 3764, 3824, 3840, 3842, 3856, 3857, 3890, 3891, 3903, 3911, 3959, 3960, 3968, 3969, 3976, 4028, 4077, 4083, 4091, 4092, 4117, 4123, 4145, 4168, 4189, 4235, 4240, 4244, 4245, 4317, 4320, 4321, 4353, 4354, 4411, 4412
Oh, but thats not all, there are more:
* Siping
* SIP
* SIMPLE
Somedays, I am very happy I got away from VoIP. Don’t get me wrong, ‘standards’ are better than the situation with RSS, but this many standards make it nearly impossible to get every client and server working perfectly with each other.