The Connected party address presentation can be set to one of the two values as described above. The COLP MIB variable is used when the interface is acting as a calling party to a call setup message. When set to enable(1), while a call establish-ment response message is forwarded through this interface, the connected party number is provided to the calling user. When set to disable(2), while a call establishment response message is forwarded through this interface, the connected party number is not provided to the calling user. The value of undefined(3) is a read-only value used for interfaces where supplementary services are not applicable.