Big tech firms cut employees' access to Huawei, 5G rollout in jeopardy

Companies want to limit informal exchanges, in which their engineers feel more comfortable discussing proprietary technology with rivals

Some of the world’s biggest tech companies have told their employees to stop talking about technology and technical standards with counterparts at Huawei Technologies Co Ltd in response to the recent US blacklisting of the Chinese tech firm, according to people familiar with the matter.

Chipmakers Intel Corp and Qualcomm Inc, mobile research firm InterDigital Wireless Inc and South Korean carrier LG Uplus have restricted employees from informal conversations with Huawei, the world’s largest telecommunications equipment maker, the sources said.

Such discussions are a routine part of international meetings where engineers gather to set technical standards for communications technologies, including