# MatchX no TX

**URL:** <https://www.thethingsnetwork.org/forum/t/matchx-no-tx/11240>\
**Category:** Gateways\
**Created:** [December 18, 2017, 6:58pm UTC](https://www.thethingsnetwork.org/forum/t/matchx-no-tx/11240 "2017-12-18T18:58:03Z")\
**Posts on this page:** 1\
**Showing post:** 36

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**Author:** ![htdvisser](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/htdvisser/32/45312_2.png) [@htdvisser](https://www.thethingsnetwork.org/forum/u/htdvisser)\
**Post date:** [December 22, 2017, 9:58am UTC](https://www.thethingsnetwork.org/forum/t/matchx-no-tx/11240/36 "2017-12-22T09:58:59Z")

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> [@Verkehrsrot](#):
>
> But why did the timing suddenly stop to work with the MatchX Gateways, after it worked without problems for several weeks? Was there a change in the TTN backend in the past days/weeks?

There have not been any changes in the scheduling logic since we doubled the time-before-tx on March 10 2016 (`1bb19bf818`). After reading the discussion here (and on Twitter) I just added another 200ms (`c8bd97b135`) to increase support for slow connections (or slow gateways). I’ll try to have that change deployed later today.

> [@jmarcelino](#):
>
> there has been a running rumour that TTN protocol / TTN gateways would have a “preferred” path

This is definitely not true. In the future we _may_ give application owners the option to prefer authenticated/secure gateways (using MQTT or gRPC over TLS) over unauthenticated/insecure gateways (using JSON over UDP), but that won’t be enabled by default.

> [@jmarcelino](#):
>
> So far in my tests TTN protocol has actually had worse delay

The MQTT server in between indeed adds a bit of delay. We’re working hard on reducing this by optimizing our MQTT server. Right now the extra delay is a few milliseconds at worst.

 ![46](https://www.thethingsnetwork.org/forum/uploads/default/original/2X/8/8235755d74c2e0005957885759b859155ab12da4.png)

Of course TCP may also add some extra delay on bad connections (TCP packets are retransmitted, whereas UDP packets would simply get lost)

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