DELIVERY TIMEOUT (Property Type 0x02) is a Track Property. It expresses the publisher's DELIVERY_TIMEOUT for a Track (see Section 9.3.3).
A DELIVERY_TIMEOUT value of 0 indicates no timeout; Objects do not expire due to delivery timeout.
If both the subscriber specifies a DELIVERY_TIMEOUT parameter and the Track has a DELIVERY_TIMEOUT property, the endpoints use the min of the two non-zero values for the subscription. If either value is 0, the non-zero value is used. If both are 0, there is no delivery timeout.
If unspecified, the subscriber's DELIVERY_TIMEOUT is used. If neither endpoint specified a timeout, Objects do not time out.