Multiple subscriber identity modem (10) capable of receiving messages related to at least two subscriber identities, characterized in that it comprises a delaying module (19) configured to: —determine, from a connection request for a service associated with a first subscriber identity, whether the service belongs to a first class of communication, and, when the service has been determined as belonging to the first class of communication, —determine whether a remaining time between the connection request and a next paging occasion, associated with a second subscriber identity, is falling on a first side of a threshold, and, when the remaining time has been determined as falling on the first side of the threshold, —delay an access grant indication related to the connection request until the paging occasion has been handled.