05-30-2019 06:05 AM - edited 07-05-2021 10:29 AM
I purchased a second hand AT&T CISCO 3G MicroCell DPH153-AT Wireless Cell Phone Signal Booster
The previous owner assures me that it works
I was able to activate it online at the ATT web site.
However, when i plug it into the Ethernet switch, the network icon on the front panel flashes for about 15 seconds every once in a while. however, the communication lights on the switch do not light. i have tried different switches and changed cables, including straight through and cross overs. I also called ATT and they were not able to help except to go through the online activation again.
Is there something i need to do differently or does the unit not work?
05-31-2019 01:42 AM
my suggestion is the microcell tries to get an ip-address from DHCP but this times-out.
first check DHCP server at your local lan/router/modem
second: the ethernet port auto negotiation may take too long for the microcell
which results in the DHCP timeout before (!) the port-auto negotiation has succeeded
to speed up (disable) negotiation experiment with settings
depending on connected switchtype you may need to configure port-settings as
- switchport mode access
- spanning-tree portfast
you may also need to configure fixed speed/duplex like
- speed [100| 1000| a-100, a-1000]
- duplex [full | half]
05-31-2019 03:57 AM
Thanks for your reply
The DHCP is fine, other devices and computers attached to the switch have no trouble getting assigned an IP address
I have no control over the settings of the switch or DHCP server as they are under control of the IT department. But i doubt that is the culprit as the lights on the two switches i tried do not blink when the cable is connected. it seems that the yellow Ethernet port on the microcell does not work.
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