Regarding the lay-offs - telecom industry is essentially a sinewave. The "good" period (e.g. from 5G prototype to complete network migration to 5G) lasts approximately 5 years. The way contracts are signed means that you sell X number of network nodes (base stations, core nodes, etc) and some kind of support contract to go with it. After that, there is nothing. Very different from public cloud providers where you pay as you go. Ericsson and most telecom vendors still haven't figured out how to monetize this.
>"The company faces mounting competition from China’s Huawei and Finland’s Nokia as well as weak emerging markets and falling spending by telecoms operators with demand for next-generation 5G technology still years away."
The layoffs are attributed to three things:
1. Competition
2. A slump in investment in emerging markets.
3. Falling spending(it's not clear from the press relase if that was just spending for Ericsson's gear.)
Additionally there was no global Telecom industry slump in 2016. Just in the US alone it was something of a boom year with lots of activity. See:
https://www.nasdaq.com/articles/strong-growth-potential-for-...
https://companiesmarketcap.com/largest-companies-by-number-o...
Erlang was created, at Ericsson, for a telephony switch.
It's shuttered the consumer side entirely (Sony Ericsson was a joint venture, not a group), it's one of the lead developers in mobile telephony, as well as the lead IP holder in the domain.
In Europe also a large player in the broadcast space, though Red Bee Media (formerly Ericsson Broadcast and Media Services): BBC, Channel 4, ITV, Canal+, as well as Channel 4 and Channel 5's VOD. RBM is also a huge provider of closed captioning, signing, and audio description worldwide, by far the largest in europe for more than 15 years (after they acquired Mundovisión and Titelbild).