Section 301-10.107 of the FTR outlines specific conditions ...

If the use of the phone card is not an option, TIGTA will reimburse employees up to $10 per day for personal phone calls for domestic travel and up to $20 a day for foreign travel. Although no limit is placed on the number or duration of these calls, the approving official should closely monitor these charges to ensure they meet the “per day ... ................
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