Not all tvs can be paired. On your tv searched for cec which is the protocol that enables pairing. Check this is set to on.
Not sure which TalkTalk box you have but the pairing guide can be found here.
If you still cannot pair it's probable that your tv cannot be paired, but if you wish to check you will need to contact TalkTalk direct. Please see my signature for details.
From the 29th of March our TalkTalk Community will move to peer-to-peer support and the TalkTalk team will no longer be here to support with queries. Don’t worry we still have plenty of ways to reach out if you need to speak to TalkTalk directly. For more details check out the link here:
How to contact TalkTalk Broadband - Help & Support.
