> For the complete documentation index, see [llms.txt](https://prosbcdocs.telcobridges.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://prosbcdocs.telcobridges.com/tmedia-documentation/use-cases/ip-transcoding-unit-configuration-use-case-two-subnet-two-ip-addresses-tagged.md).

# IP Transcoding Unit Configuration Use Case:Two subnet, Two IP Addresses, tagged

> **Applies to:** SBC 3.1, 3.3

### Perequisites

|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 | Perequisites                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |                                 |
| ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------------------------- |
| \*ProSBC (or Tsbc) Host Network device name Network device role Network Config ------------------- ------------------- ------------------- mgmt0 mgmt Untagged wan0 LAN/WAN Tagged 1650 lan0 LAN/WAN Tagged 1651 trans0 LAN/WAN Tagged 752 trans1 LAN/WAN Tagged 753 ctrl0 ctrl0 Tagged 750 ctrl1 ctrl1 Tagged 751 **NOTE:** The 'Network device names' for transcoding must be trans0 and trans1 \*Hardware Unit - TB002177 is the TSBC-HW-TRANS unit in the below setup Network device name Network device role Network Config ------------------- ------------------- ------------------- voip0 LAN/WAN Tagged 752 voip1 LAN/WAN Tagged 753 eth0 ctrl0 Untagged PVID 750 \*\* eth1 ctrl1 Untagged PVID 751 \*\* **NOTE:** On the network switch, the control ports on the Hardware unit need to be configure with Link Type: Access                                                                                                                                                                                                                                                                                                                                                                                          |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |                                 |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 | Configure IP Network for wan0                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                | Configure IP Network for lan0                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    | Configure IP Network for trans0                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  | Configure IP Network for trans1 |
| \*Create [vp\_wan0 virtual port](https://github.com/telcobridges-main/tmedia-wiki/tree/main/tmedia/configuration/configuring-a-virtual-port/README.md): \*\***Name**: vp\_wan0 \*\***Ethernet Ports**: wan0 \*\***VLAN name**: vlan\_1650 \*\***VLAN id**: 1650 \*Create [wan0 IP Address](https://github.com/telcobridges-main/tmedia-wiki/tree/main/tmedia/configuration/configuring-ip-interfaces/README.md): \*\***Name**: wan0 \*\***Service to use**: RTP, SIP \*\***Host VLAN**: vp\_wan0:vlan\_1650 \*\***IP address**: 192.168.150.1 \*\***Netmask**: 255.255.255.0                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    | \*Create [vp\_lan0 virtual port](https://github.com/telcobridges-main/tmedia-wiki/tree/main/tmedia/configuration/configuring-a-virtual-port/README.md): \*\***Name**: vp\_lan0 \*\***Ethernet Ports**: lan0 \*\***VLAN name**: vlan\_1651 \*\***VLAN id**: 1651 \*Create [lan0 IP Address](https://github.com/telcobridges-main/tmedia-wiki/tree/main/tmedia/configuration/configuring-ip-interfaces/README.md): \*\***Name**: lan0 \*\***Service to use**: RTP, SIP \*\***Host VLAN**: vp\_lan0:vlan\_1651 \*\***IP address**: 192.168.151.1 \*\***Netmask**: 255.255.255.0 | \*Create [vp\_trans0 virtual port](https://github.com/telcobridges-main/tmedia-wiki/tree/main/tmedia/configuration/configuring-a-virtual-port/README.md): \*\***Name**: vp\_trans0 \*\***Ethernet Ports**: trans0 \*\***VLAN name**: vlan\_752 \*\***VLAN id**: 752 \*Create [trans0 IP Address](https://github.com/telcobridges-main/tmedia-wiki/tree/main/tmedia/configuration/configuring-ip-interfaces/README.md): \*\***Name**: trans0 \*\***Service to use**: RTP \*\***Host VLAN**: vp\_trans0:vlan\_752 \*\***IP address**: 192.168.152.1 \*\***Netmask**: 255.255.255.0 | \*Create [vp\_trans1 virtual port](https://github.com/telcobridges-main/tmedia-wiki/tree/main/tmedia/configuration/configuring-a-virtual-port/README.md): \*\***Name**: vp\_trans1 \*\***Ethernet Ports**: trans1 \*\***VLAN name**: vlan\_753 \*\***VLAN id**: 753 \*Create [trans1 IP Address](https://github.com/telcobridges-main/tmedia-wiki/tree/main/tmedia/configuration/configuring-ip-interfaces/README.md): \*\***Name**: trans1 \*\***Service to use**: RTP \*\***Host VLAN**: vp\_trans1:vlan\_753 \*\***IP address**: 192.168.153.1 \*\***Netmask**: 255.255.255.0 |                                 |
| Add transcoding unit                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |                                 |
| \*Show [transcoding unit](https://github.com/telcobridges-main/tmedia-wiki/tree/main/tmedia/configuration/show-the-hardware-units-menu/README.md) \*Add [TB002177 transcoding unit](https://github.com/telcobridges-main/tmedia-wiki/tree/main/tmedia/configuration/adding-transcoding-unit/README.md) == Transcoding unit network configuration ==                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              | Configure IP Network for voip0                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   | Configure IP Network for voip1                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |                                 |
| \*Modify [voip0 virtual port](https://github.com/telcobridges-main/tmedia-wiki/tree/main/tmedia/configuration/configuring-a-virtual-port/README.md): \*\***Name**: voip0 \*\***Untagged**: unselect \*\***VLAN id**: 752 \*Modify [voip0 IP Address](https://github.com/telcobridges-main/tmedia-wiki/tree/main/tmedia/configuration/configuring-voip-interfaces/README.md): \*\***Interface Name**: voip0 \*\***Service to use**: RTP \*\***Virtual port**: TB002177:voip0 \*\***IP address**: 192.168.152.10 \*\***Netmask**: 255.255.255.0                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   | \*Modify [voip1 virtual port](https://github.com/telcobridges-main/tmedia-wiki/tree/main/tmedia/configuration/configuring-a-virtual-port/README.md): \*\***Name**: voip1 \*\***Untagged**: unselect \*\***VLAN id**: 753 \*Modify [voip1 IP Address](https://github.com/telcobridges-main/tmedia-wiki/tree/main/tmedia/configuration/configuring-voip-interfaces/README.md): \*\***Interface Name**: voip1 \*\***Service to use**: RTP \*\***Virtual port**: TB002177:voip1 \*\***IP address**: 192.168.153.10 \*\***Netmask**: 255.255.255.0                                |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |                                 |
| Configure SIP                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |                                 |
| \*[Configure SIP](https://github.com/telcobridges-main/tmedia-wiki/tree/main/tmedia/configuration/freesbc-web-portal-3-0-protocol-stacks/README.md) \*\* For WAN0 \*\*\*RTP port ranges parameters: \*\*\*\***Name**: pr\_wan0 \*\*\*\***IP Interface**: vlan\_1650:wan0 \*\*\*\***RTP Port min**: 20000 \*\*\*\***RTP Port max**: 40000 \*\*\*SIP transport server parameters: \*\*\*\***Name**: ts\_wan0 \*\*\*\***Port**: 5060 \*\*\*\***IP Interface**: vlan\_1650:wan0 \*\*\*SIP NAP parameters: \*\*\*\***Name**: nap\_sip\_wan0 \*\*\*\***Proxy Address**: 192.168.150.10 \*\*\*\***Port Range**: vlan\_1650:wan0:pr\_wan0:20000-40000 \*\*\*\***SIP Transport Servers**: ts\_wan0 \*\* For LAN0 \*\*\*RTP port ranges parameters: \*\*\*\***Name**: pr\_lan0 \*\*\*\***IP Interface**: vlan\_1651:lan0 \*\*\*\***RTP Port min**: 20000 \*\*\*\***RTP Port max**: 40000 \*\*\*SIP transport server parameters: \*\*\*\***Name**: ts\_lan0 \*\*\*\***Port**: 5060 \*\*\*\***IP Interface**: vlan\_1651:lan0 \*\*\*SIP NAP parameters: \*\*\*\***Name**: nap\_sip\_lan0 \*\*\*\***Proxy Address**: 192.168.151.10 \*\*\*\***Port Range**: vlan\_1651:lan0:pr\_lan0:20000-40000 \*\*\*\***SIP Transport Servers**: ts\_lan0 |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |                                 |


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