SD Memory CardsIssue Possible Cause & Solution ReferenceI cannot record to the SDmemory card.• The SD memory card is not compatible with the unit.→ Make sure that you are using a compatible SD memorycard. (SDHC, miniSDHC, and microSDHC memory cardsare not compatible with the unit.)page 30• The SD memory card is not formatted or was not formattedproperly.→ Format SD memory cards for use with this unit in FATformat (FAT16) using a computer.page 31• The SD memory card was not inserted properly.→ Make sure that the SD memory card is inserted properlyby gently pushing it securely but gently toward the back ofthe SD memory card slot.page 30• The switch on the side of the SD memory card is in the"LOCK" position.→ Remove the card, slide the switch to unlock the card, theninsert the card again.page 30PhonebookIssue Possible Cause & Solution ReferenceI cannot add or edit entriesto the phonebook.• You are on a call or playing back recordings.→ You cannot add or edit phonebook entries while on a callor while playing back recordings.—• The "Operation Mode" setting is not correct.→ Change the setting to "Peer to Peer" if you want to addor edit peer to peer IP call entries (i.e., entries stored byspecifying the called party's IP address).→ Change the setting to "IP-PBX" if you want to add or editIP call entries that will be called when using the unit as aSIP extension (i.e., entries stored by specifying the calledparty's SIP extension number or SIP URI).page 29• A call is being received.→ The unit exits the phonebook automatically when a call isreceived. Add or edit the phonebook entry again once youhave finished the call.—• There are 100 entries in the phonebook.→ The phonebook is full. Erase any unnecessary entries. page 41Document Version 2011/06 Operating Instructions 71Troubleshooting