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• Network Settings (introduction of the lan-wan and bonding modes)
• SIP Stacks (different SIP Stacks per network interface) 

Network Settings

The SBC has 3 different LAN-Modes: 

• Single Mode
• LAN-WAN
• Ethernet Bonding

Single Mode

this mode behaves exactly as the standard mode of the Gateway beroNet OS. The LAN and WAN port are configured as a Switch, both can be used to connect to a network.

LAN-WAN Mode

In LAN-WAN Mode the 2 Network interfaces are separated and can have different IP Addresses and networks. Note that only the WAN Port can have a default Gateway to connect to the internet. The LAN Port however can have additional routes to address multiple internal networks. 

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The nameserver settings are global, so internal or external nameservers can be used, as long as they are reachable. 

SIP Stacks

The SIP Stacks allow different settings between the LAN and WAN ports. This can be used to setup scenarios like: SIP over TLS on the WAN stack and UDP on the LAN Stack. To make use of the LAN / WAN SIP Stacks the SBC needs to be configured in LAN-WAN Mode as described in the network chapter.

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• Bind Port  (the port on which the SIP Stack receives SIP Packets, default: 5060)
• RTP Port Range (the RTP Ports where Audio packets are received, default-lan: 6000-7000 and default-wan: 8000-9000) NOTE: at the moment the RTP Ports from LAN and WAN Stacks can not overlap!
• TOS RTP / TOS SIP (the Type of Service for the SIP and RTP Packets, default: 160)
• RTP Port Selection (how the next free RTP port is selected from the Range) can be:
  • standard (next free port is used always counting form the lowest port, this is default)
  • round-robin (next free port is used and next search starts at this port + 1)
• SIP transport (can be TLS, TCP, UDP, default: UDP)

Choosing the SIP Stack per SIP Account

Each SIP Account can be associated with a SIP Stack, this can be done by choosing the SIP Stack within the SIP account-configuration: 

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