Media Card maintenance Page 147 of 162Communication Server 1000E MaintenanceNote: If the Media Card displays the F:08 code, this can merely indicatethat the Security Device is missing from the card.• If the management Ethernet interface or the voice Ethernet interface onthe Media Card fails. The failure can be indicated as follows:— No link pulse on the Media Card voice IP interface status LED andon the associated hub.— The maintenance terminal continuously prints lnIsa0 CarrierFailure messages.Note: To ensure that the failure is originating from the Media Card,verify that its associated hub port and TLAN cable are operational.• If a voice channel on the Media Card has a consistent voice quality fault,such as persistent noise or lack of voice path, even after resetting the cardand retransmitting the card properties.To replace a Media Card, refer to IP Line: Description, Installation, andOperation (553-3001-365).Verify Media Card software and firmwareTo verify the Media Card software and firmware, refer to IP Line:Description, Installation, and Operation (553-3001-365).IP Line and IP Phone maintenance anddiagnosticsFor Nortel Networks IP Phones, there are two kinds of Terminal Numbers(TNs) to consider:• A physical TN, which represents a physical unit of the Media Card.• A virtual TN, which is configured on a virtual superloop and representsan IP Phone.The physical TNs are seen as trunk units and are managed using existing LD32 commands. These commands do not apply to virtual TNs. Use Element