Solutions texting-protocol letters has 5 entries with similar clues

• 3-letter words
• brbGimme a sec, in texting
• 4-letter words
• ttylTexting farewell
• httpHypertext Transfer Protocol
• 6-letter words
• escarpintrusion prevention mechanism in key address resolution protocols originally
• 11-letter words
• haplographyInadvertent omission of repeated letters or letters in writing