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internal SIP Communication

Mon Mar 25, 2019 12:20 pm

Hi eberybody,
I have an issue with some SIP Clients in my network setup:

Network Setup:

VLAN 20: internal SIP Server for internal and external Communication (Registrar: Fritzbox 7412)
VLAN 20: 4 x Cisco 79xx Sip-Phones attached to Fritbox 7412
VLAN 10: Softphone (e.g. Phoner Lite) attached to FritzBox 7412
VLAN 60: Android SoftPhone attached to FritzBox7412

If I connect the Softphones to VLAN 20 i can use it and can connect the Registrar, but it is not working if clients are outside VLAN 20. There are no restrctions in FW-Rules. Layer3 Communication is wroking, VLAN 10, VLAN 20 and VLAN 60 are member of VLANFriends.)
add action=accept chain=forward comment=\
    "Allow inter VLAN communication with VLAN friends" dst-address-list=\
    VlanFriends in-interface-list=LAN src-address-list=VlanFriends
Anybody an idea, who SIP communication can me managed accross differnt Subnets? Do I have to configure a STUN-Server in VLAN 20 and is it possible to configure this on the Router?


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