When the OSCT entry indicates that parallel sessions are not supported, an external BIND request to establish a parallel session link is rejected. Only a single session link can be established if the OSCT entry has been defined with PARSESS=NO. Hence only one conversation at a time can be active on such a link, and other conversation requests must queue, pending session availability.
If the session setup request comes from the local domain (via a LINK command or NCL procedure allocate request), the product region attempts to set up a contention winner session. However, the polarity of the session can be negotiated by the secondary LU. If the session setup request comes from outside the local domain, the region accepts the session polarity without negotiation.
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