The government is urging businesses to sign up to its Trader Support Service (TSS) ahead of the Brexit transition period ending on 31 December.
The contact centre will complete digital processes on behalf of all businesses moving goods into Northern Ireland under the Northern Ireland Protocol from 1 January 2021.
More than 7,000 traders have so far signed up to the TSS, which offers customs support and guidance.
With fewer than 50 days until the Brexit transition period comes to an end, the government is encouraging more businesses to register.
Secretary of State for Northern Ireland, Brandon Lewis MP, said: "The TSS contact centre will directly assist businesses with queries on the movement of goods and provide guidance on what steps they need to take to prepare for the end of the Brexit transition period. "There will be changes to the way goods move between Great Britain and Northern Ireland in fewer than 50 days, that's why I urge more traders to sign up to this service and get ready."
Traders looking to sign up can do so at https://www.tradersupportservice.co.uk/tss