I've done some work for a telco and I was surprised to find that emergency calls are routed over completely different infrastructure to ordinary calls, and it is not routinely tested.

There wasn't an automated way to test it, and most people never thought at all about the emergency call routing because it was such a low number of calls (I think single digits ever).

It's easy to see how you could accidentally break emergency calling and not notice.

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cmullaparthi 13 hours ago | parent | next [-]

Not sure which telco that is - but in the UK, impact on emergency calls is taken into account for every change that happens. This was non-negotiable in the 15 years I spent at a telco.

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6LLvveMx2koXfwn 13 hours ago | parent | prev | next [-]

In the UK, based on the latest data, we get 35 million 999/112 calls per annum, roughly 96k per day.

	▲	closewith 13 hours ago \| parent [-]
		But there's about 50,000 mobile phone towers, so still single digits per site.

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NewJazz 13 hours ago | parent | prev [-]

Would be wonderful if we could crowd source regular testing. Could help catch device specific issues like those on the Pikcel line of phones.