> I want to know that why these server send OOD notify. > What is reason for the generation of OOD Notify.
RFC 6665 doesn't allow generating NOTIFY outside of a dialog; and it only continues to allow the implied REFER subscription for historical reasons. However for interoperability or capacity reasons, some vendors allow (per configuration or negotiation) the ability to send NOTIFY without requiring the corresponding SUBSCRIBE. _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
