---

All answers having "Calls" as clue:

3 Character Answers:

---

ANY

RES



4 Character Answers:

---

DUBS

REFS

SEES



5 Character Answers:

---

BITES

DIALS

HAILS

NAMES

PAGES

YELLS



6 Character Answers:

---

BEDUBS

PHONES

RADIOS

VISITS



7 Character Answers:

---

RINGSUP



8 Character Answers:

---

PHONESIN



10 Character Answers:

---

TELEPHONES