> For the complete documentation index, see [llms.txt](https://docs.glesys.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.glesys.com/products/connectivity/network-services/spectrum/service-description.md).

# Service description

Version 2024.01.01

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Build your optical metro network with our Spectrum service. By leasing spectrum, you gain complete control over the endpoints and their capacity. The service is available in locations where we have metro networks. Don't hesitate to [contact sales](mailto:sales@glesys.com) to check availability.

### Technical specification

<table data-header-hidden><thead><tr><th width="374"></th><th></th></tr></thead><tbody><tr><td><strong>Hand-off interface</strong></td><td>One DWDM 100GHz ITU Grid</td></tr><tr><td><strong>Attenuation</strong></td><td>Max 20 dB</td></tr></tbody></table>