Train services between Ipswich and Felixstowe were cancelled on Friday night due to a signalling fault.
Services were suspended from around 8pm to 10pm after a fault with the signalling system between Derby Road and Trimley blocked all lines.
Replacement bus services were in operation during the disruption.
A spokesman for Abellio Greater Anglia said: “Disruption to Ipswich-Felixstowe trains has now ended.”
Comments: Our rules
We want our comments to be a lively and valuable part of our community - a place where readers can debate and engage with the most important local issues. The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.
Please report any comments that break our rules.
Read the rules here