> For the complete documentation index, see [llms.txt](https://help.boomerang3.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.boomerang3.com/boomerang-3-domain-administrator-manual/admin/infrastructure/infrastructure__gateways/gateway-types/s2-gw.md).

# S2 GW

If the GW is created from UG list, the type and MAC address are filled in automatically.

![](/files/SShXBAs4oXMfXRITmuBG)

The Edit form looks as below:

![](/files/CjPejJQbbA0mdqGnoIfD)

### S2 GW specific parameters <a href="#s2-gw-parameters" id="s2-gw-parameters"></a>

<table><thead><tr><th width="132.5">Parameter</th><th>Description</th></tr></thead><tbody><tr><td>MAC</td><td>MAC address of S2 GW. It is set in S2 GW configuration file and normally is equal to real MAC address of the S2 GW. It can be set to another MAC address if needed. If so the MAC in S2 GW config file must have the same value - see <a data-mention href="/spaces/3O2JmRv8Cq2LTrIfpgxe">/spaces/3O2JmRv8Cq2LTrIfpgxe</a>.</td></tr><tr><td>Radio Group</td><td>A number from 1 to 254 defining the radio network ID. A parameter set in S2 Gateway that identifies the radio network ID.</td></tr><tr><td>Time slot</td><td>Defines transmission time slot which enables up to 3 S2 radio networks to operate in the same area without radio interference. The format is n:n:n where n is 0 or 1. Each position defines 1/3 of a minute that can be used by a given GW for radio communication. If there are no other S2 networks nearby enter 1:1:1 to use all time slots. If there are 2 S2 networks that may interfere on the radio then you may use 1:0:0 for one of them and 0:1:0 for the other. If the first one has more nodes then you may use 1:1:0 for the first and 0:0:1 for the second. With these settings, the first network will communicate during the first 40s, and the second network will be active during the remaining 20s of every minute.</td></tr></tbody></table>


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Parameter	Description
MAC	MAC address of S2 GW. It is set in S2 GW configuration file and normally is equal to real MAC address of the S2 GW. It can be set to another MAC address if needed. If so the MAC in S2 GW config file must have the same value - see /spaces/3O2JmRv8Cq2LTrIfpgxe.
Radio Group	A number from 1 to 254 defining the radio network ID. A parameter set in S2 Gateway that identifies the radio network ID.
Time slot	Defines transmission time slot which enables up to 3 S2 radio networks to operate in the same area without radio interference. The format is n:n:n where n is 0 or 1. Each position defines 1/3 of a minute that can be used by a given GW for radio communication. If there are no other S2 networks nearby enter 1:1:1 to use all time slots. If there are 2 S2 networks that may interfere on the radio then you may use 1:0:0 for one of them and 0:1:0 for the other. If the first one has more nodes then you may use 1:1:0 for the first and 0:0:1 for the second. With these settings, the first network will communicate during the first 40s, and the second network will be active during the remaining 20s of every minute.