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12-05-2019 07:58 AM
12-05-2019 07:58 AM
HPE OfficeConnect Switch 1920S JL382A not allowing and ipphone grandstream to register
Hello Team,
I am wondering if you can help me out.
I got two HPE OfficeConnect Switch 1920S JL382A and I am not able to register ip phone grandstream throught the switch. If I run an application in a computer as ip communicator everything workes fine. The issue is just with physical ip phones.
I alredy did a factory default configuracion and updated the firmware of the switches to the latest version but the isuse is the same.
I enable/disable LLDP-MED AND Auto voice VLAN with no luck.
If I replace the switch to another one everyting works fine.
We are using a single vlan(vlan 1) and for sure I am able to ping the pbx from the switch.
Any help is wellcome.
Regards,
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12-09-2019 12:28 AM
12-09-2019 12:28 AM
Re: HPE OfficeConnect Switch 1920S JL382A not allowing and ipphone grandstream to register
Hello,
Please go to Security > Advanced Security and check if the Auto DoS Features are enabled. If yes please disable all of them and test again.
Alternatively you can try disabling Prevent TCP Blat Attack and Prevent UDP Blat Attack.
This feautures are blocking traffic if the source UPD or TCP port is equal to the destination port. I remember that Ip phones using SIP had issues with this settings because SIP was using the same UDP port 5060 as source and destination port.