Use test modem-pool to performs hardware diagnostic tests on the specified modem pool group or an individual member of a specified group (Combined or Integrated). A combined modem-pool group consists of pairs of analog and digital line ports. One pair of analog and digital line ports used for modem-pooling is called a conversion resource. An Integrated group consists of modem-pool media modules, each containing two conversion resources. Therefore, when a member number is specified for a combined modem-pool group, one conversion resource is tested, and when a member number is specified for an integrated modem-pool group, two conversion resources are tested.