An ISDN-PRI test call is placed across an ISDN-PRI user-network interface to a previously designated number to test ISDN capabilities of the switch, the trunk and the far end. An ISDN-PRI test call is also a maintenance procedure concerned with the identification and verification ISDN-PRI user-network interface problems. The ISDN-PRI test call can access ISDN-PRI trunks only.
An ISDN-PRI test call can be placed only if the circuit translates to an ISDN-PRI trunk. An ISDN-PRI test call can be originated through either the synchronous or the asynchronous method. Each method is described in the following sections.
Note:
Before attempting to make an ISDN-PRI test call to the public network (the far end), make sure that test call service is provisioned by the network. The user must subscribe to Test Type 108 service and have the correct far-end test call number administered on the Trunk Group screen to be able to make the call.
