●Overview
■The purpose of this PCN is to avoid service interruption for certain MultiTech 4G products impacted by the impending AT&T 3G network sunset.
■The 4G/LTE Category 4 devices listed in this PCN may no longer attach to the AT&T network after their3G network sunset, scheduled for late February 2022. Voice-capable cellular modules integrated into several MultiTech products are configured for voice-centric signaling by default. These products are likely to arrive at a No Service condition after 3G sunset --even for data-only applications. This is a result of the module requiring a voice signal to connect to networks configured to leverage a combined attach (3G and LTE) for LTE device registration.
■The MultiTech products detailed in this PCN are impacted by the 3G sunset. A software configuration change in the cellular module in these products is required in order to avoid a No Service condition. The only exception is for products with cellular modules supporting the IMS service Voice over LTE (VoLTE) and an accompanying VoLTE subscription from your service provider.

Brand of Product：	MULTITECH
Part#：	MTE-LAT6-xx 、 MTR-LNA7-xx 、 MTQ-L4G1-xx 、 MTQ-LNA7-xx 、 MTSMC-L4G1-xx 、 40002566B 、 40003065B More Part#
Product Category：	rCell 100 Series Models 、 Cell Models More
Application：	More
Data Type：	PCN/EOL More
Safety & Environment Standards：	More
Operating Temperature：	Please see the document for details
Qualification Grade：	More
Qualification Approval：	More
Package：
Language：	English Chinese Chinese and English Japanese
Date of Creation：	May 6, 2021
Version Number：
Data Encoding：	PCN 05062021-00
Data Size：	507 KB