# Lost of transmission speed, in a ZigBee Network

**URL:** <https://forums.digi.com/t/lost-of-transmission-speed-in-a-zigbee-network/18579>\
**Category:** Interface/Development Boards\
**Tags:** network, real-time, xbee-pro, zigbee\
**Created:** [July 27, 2017, 10:06am UTC](https://forums.digi.com/t/lost-of-transmission-speed-in-a-zigbee-network/18579 "2017-07-27T10:06:18Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![olarguz](https://avatars.discourse-cdn.com/v4/letter/o/e19b73/32.png) [@olarguz](https://forums.digi.com/u/olarguz)\
**Post date:** [July 27, 2017, 10:06am UTC](https://forums.digi.com/t/lost-of-transmission-speed-in-a-zigbee-network/18579/1 "2017-07-27T10:06:18Z")

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Hi,

I’m working in a Xbee mesh with a device is the coordinator node, and 4 more are routers.

The processor connected to coordinator node send packages to all routers each 500ms in normal conditions, but we torn off a router device and package time in reception to others router become over 1000ms, and we don´t know why this is happend.

The time of proccessor send is 500ms but reception time is over 1000ms and variable time. This behavior is unspected and unacceptable.

I need help to resolve this throuble.

Thanks for help.

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<div class="post-metadata">

**Author:** ![mvut](https://sea2.discourse-cdn.com/flex016/user_avatar/forums.digi.com/mvut/32/31_2.png) [@mvut](https://forums.digi.com/u/mvut)\
**Post date:** [July 27, 2017, 10:28am UTC](https://forums.digi.com/t/lost-of-transmission-speed-in-a-zigbee-network/18579/2 "2017-07-27T10:28:31Z")

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Are you sending unicast or broadcast packets?

What is the network makeup? That is how are the nodes laid out and over how many hops?

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<div class="post-metadata">

**Author:** ![olarguz](https://avatars.discourse-cdn.com/v4/letter/o/e19b73/32.png) [@olarguz](https://forums.digi.com/u/olarguz)\
**Post date:** [July 27, 2017, 2:40pm UTC](https://forums.digi.com/t/lost-of-transmission-speed-in-a-zigbee-network/18579/3 "2017-07-27T14:40:12Z")

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I’m using a ZigBee TH Reg network.

These are parameters of router nodes. Coordinator node is same parameters, but only change CE value to 1.

Now network is in lab, and distances between modeles are less than 10 meters.

```
xbp24-s2c-th_405F.xml

  1000
  7FFF
  3
  0
  FF
  0
  0
  0
  0
  0
  0
  0
  0
  PC-Side
  1E
  0
  FF
  A0000
  3C
  0
  3
  E8
  E8
  11
  0
  4
  0
  0
  
  
  4
  0
  0
  3
  1
  0
  1
  0
  64
  3E8
  2B
  20
  1
  0
  1388
  0
  0
  0
  1
  0
  0
  0
  0
  1
  1
  1
  1
  0
  0
  1
  1
  1FBF
  1FFF
  0
  28
  0
  0
  0

```

Thanks by yours help.

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<div class="post-metadata">

**Author:** ![mvut](https://sea2.discourse-cdn.com/flex016/user_avatar/forums.digi.com/mvut/32/31_2.png) [@mvut](https://forums.digi.com/u/mvut)\
**Post date:** [July 27, 2017, 3:02pm UTC](https://forums.digi.com/t/lost-of-transmission-speed-in-a-zigbee-network/18579/4 "2017-07-27T15:02:14Z")

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What is the API frame you are sending? The destination address is fond in that frame.