Bournemouth defender Steve Cook has signed a new three-year deal with the Championship new boys.
Sky Sports revealed on Tuesday that fresh terms were on the table and that an agreement was close.
The 22-year-old, who moved to Bournemouth from Brighton in 2011, will now stay at the Goldsands Stadium until the summer of 2016.
"The club is going places, I wanted to be part of that and I was more than happy to sign a new contract," he told the club's official website.
"I love the place, the lads here are brilliant and the gaffer has been a huge influence on me.
"As soon as a new deal was mentioned, I wanted to get it sorted.
"It will take me up to when I'm 25, so I'm sure a lot will happen in those three years because the club has come a long way even in the time I've been here.
"Who knows where our future lies? But we've got a great set of lads and a very good manager and I think we will be successful."
Cook made 38 appearances last season as the Cherries secured promotion out of League One and scored his only goal in the last home game of the season against Carlisle.
Frampton, who was born in Wimbledon, helped Gillingham clinch the League Two title last season.
He began his career at Crystal Palace and has had spells at Brentford, Orient, Swindon and Millwall, where he played alongside Dons manager Neal Ardley.
Ardley told the club's official website: "I played with Andy at Millwall so I know that he is a winner and a fantastic player.
"Martin Allen echoed those thoughts when I spoke to him earlier this week; he said that we had a good player because of his attitude around the place and his character. Although he is 33, Andy looks after himself and I am sure he will have a good few years yet."
Frampton added: "It means a lot to me to sign for Wimbledon because I grew up nearby and I know about the history of the football club.
"When I played against Wimbledon for Gillingham at the end of last season the fans created a lot of noise and it ended up a good day for both clubs.
"Once Neal sold the club to me and what he wanted to achieve it was a no-brainer to sign and I am excited by the challenge ahead."
