Abstract: Provided herein are various crisphead lettuce varieties, including seeds thereof and methods of using the varieties to generate additional lettuce varieties. The varieties are characterized by their color, size, shape, cold tolerance, and resistance to Bremia lactucae.

Abstract: A method and a system for dynamic assignment of a serving network node in a communications network, preferably an IMS-based communications network, are described, wherein the communications network comprises a predetermined number of serving network nodes and wherein the method comprises: receiving a service request associated with a user equipment, another network or a network node, preferably an application server; providing load information associated with said serving network nodes; and, in response to said service request, assigning one of said predetermined number of serving network nodes to said user equipment, said other network or said network node on the basis of said load information.

Abstract: A method is disclosed for determining if the real-time status of an end-user line (4) is busy or idle. The end-user line (4), via which POTS or ISDN services may be provided, connects an end-user device (2) and an exchange (7) that is comprised by a telecom network (1). For determining the real-time status of an end-user line (4) a presence function (5) is used that comprises a process that makes use of the Completion of Calls to Busy Subscriber (CCBS) supplementary service. Because use is made of the CCBS supplementary service, the presence function (5) is able to act like an originating local exchange. In order to determine the real-time status of an end-user line (4), the presence function (5) communicates with the exchange (7), whereby the exchange (7) acts like a terminating local exchange according to the procedures of the CCBS supplementary service.

Abstract: In a telecommunication network a subscriber connected to an originating local exchange requests activation of a supplementary service. The supplementary service establishes an end-to-end TC-dialogue with a corresponding supplementary service of a destination local exchange. The TC-dialogue terminates the request on an interfering telecommunication service in an intermediate node. For preventing service operation failure in case of interaction between the supplementary service and the interfering telecommunication service, a relay link is established between an incoming TC-dialogue and an outgoing TC-dialogue at the intermediate node to realize a chain of end-to-end TC-dialogues between the originating exchange and the destination exchange, while using a transparent relay functionality independent of utilizing TCAP based supplementary service ASEs as intermediate nodes.