AT&T; will make residential phones in Singapore.

The company also reported that it is closing the residential telephone assembly lines at its Shreveport, La., plant. The closing means 877 Shreveport workers will be laid off. In Singapore, 1,000 workers will be hired to work in a facility that will open in 1986. A spokesman for the company said the Shreveport plant will continue to produce business telephones, which are less vulnerable to competition because they “tend to have much more material in them and less labor.”