Waiting for an answer, perhaps

• Unhappily listening to music?
• Shelved for now
• Waiting, phone in hand
• Stuck waiting during a phone call: 2 wds
• Enjoying Muzak, often
• Not progressing
• Waiting to talk
• In telephone limbo
• In telephone hell?

Wiktionary Word definitions in Wiktionary
vb. 1 (context transitive rare English) To hold on (to). 2 (context intransitive rare English) To hold on.