Reserving send sockets for IMS-to-IMS communication

You can reserve IMS Connect send sockets for use by IMS-to-IMS TCP/IP connections by specifying the RESVSOC parameter on the RMTIMSCON configuration statement.

The number of sockets specified on RESVSOC parameters count against the total number of sockets that an instance of IMS Connect can have open at a time, as specified on the MAXSOC parameter of the TCPIP configuration statement. Consequently, the total value of all RESVSOC parameters on all configuration statements cannot exceed the value specified on the MAXSOC parameter.

The RESVSOC parameter reserves only send sockets. Receive sockets cannot be reserved.

If your connection is an IMS-to-IMS connection that is used for MSC, each MSC logical link that uses the TCP/IP connection requires two sockets: one for sending data and one for receiving data. The RESVSOC parameter reserves only the send sockets. Therefore, connections to another instance of IMS Connect that are used for MSC use twice as many sockets than are specified on the RESVSOC parameter.

If your connection is an IMS-to-IMS TCP/IP connection that is used for OTMA, each connection uses only a single send socket. Therefore, the number of sockets reserved by the RESVSOC parameter represents the number of sockets that is used for each connection.