You hold GRAM in a TON wallet — from a Telegram app, a payment, a game — and need dollars where they are easiest to spend: a T… address on TRON for an invoice, an exchange deposit or a balance you will move again. Your wallet may still show the coin as TON or Toncoin; it was renamed Gram on 15 June 2026 and nothing but the name changed (checked on 11 October 2026).
TON and TRON are unrelated networks. The GRAM is received at a one-time TON address, confirmed twice — about 2–5 minutes with processing — and USDT is transferred on TRON to the address you gave.