The US broadcaster has shown just four hour-long highlights programmes during the 11 days of the games, and will add a 90-minute recap in a week's time.
"Will we speak to NBC? Let's hope that NBC are proposing to speak to us," International Paralympic Committee president Sir Philip Craven was quoted as saying by Metro.
"Why not? We're waiting for them to knock on our door. And if we find our values don't fit, we'll have to go somewhere else."
Prior to the Paralympics, Craven had said: "I'm very disappointed for the athletes and I'm also very disappointed for the hundreds of millions of people who live in North America who don't have the opportunity on a very easy basis to access what will be amazing images.
"Some people think that North America always lead on everything, and on this they don't."
USA finished top of the London 2012 Olympics medal with 46 golds and 104 medals in total. However, it finished only sixth in the Paralympics medals table, with 31 golds and 98 medals in total.
NBC's Olympics coverage had given it an edge over its competitors in the ratings, but the station had been criticised several times for element of its coverage.
The broadcaster had cut the tribute to the victims of the July 7 London bombings from its advert-laden delayed broadcast of the opening ceremony.
It also was forced to apologise after revealing the result of the 100m women's backstroke event in a promo slot before airing the race.
Presenter Ryan Seacrest claimed that the strong NBC viewing figures "speak for themselves", while CBS president Les Moonves also defended the coverage.
In the UK, official broadcaster Channel 4 committed to show around 500 hours of Paralympics coverage, 150 hours of which were live - over its main channel and three additional live streams.
After experiencing record audiences, the broadcaster cleared its daytime schedule partway through the games to feature more Paralympics coverage.