# introduction

The <span data-highlighted="true" data-vc="highlighted-text"><span class="_kqswh2mm"><span class="_5pioz8co _189e1dm9 _1il9buyh _19lc184f _d0altlke" data-testid="definition-highlighter">ILT</span></span></span> to <span data-highlighted="true" data-vc="highlighted-text"><span class="_kqswh2mm"><span class="_5pioz8co _189e1dm9 _1il9buyh _19lc184f _d0altlke" data-testid="definition-highlighter">VLR</span></span></span> path can have several combinations as shown in Figure 224. Four panels characterised the path between the <span data-highlighted="true" data-vc="highlighted-text">ILT</span> and <span data-highlighted="true" data-vc="highlighted-text"><span class="_kqswh2mm"><span class="_5pioz8co _189e1dm9 _1il9buyh _19lc184f _d0altlke" data-testid="definition-highlighter">ILR</span></span></span>.

![image.png](https://wiki.cept.org/uploads/images/gallery/2026-04/scaled-1680-/dRzmZx9n9TofqMzQ-image.png)

<div class="rich-media-item mediaSingleView-content-wrap image-align-start css-m8o4nl" data-layout="align-start" data-media-vc-wrapper="true" data-node-type="mediaSingle" data-renderer-start-pos="138" data-vc="media-single" data-width="489" data-width-type="pixel" id="bkmrk-figure-221%3A-ilt-to-v"><div class="css-1dejugk"><div data-alt="" data-collection="contentId-512109" data-context-id="512109" data-file-mime-type="image/png" data-file-name="21.png" data-file-size="47346" data-height="372" data-id="e1780be3-b46d-4096-833f-bb6a7fd9ef6a" data-node-type="media" data-renderer-start-pos="139" data-type="file" data-width="728"><div class="_2rko18qm _vchhusvi _kqswh2mm _ect4ttxp _p12f1osq _c71l1osq _1bsb1qmm _4t3ine4n _1hlmd0i9 _1rquusvi _eg541i5c _mts3kb7n _1ntskb7n _yfmhtlke _5sb1v00u new-file-experience-wrapper" data-media-vc-wrapper="true" data-testid="media-card-view" id="bkmrk-figure-221%3A-ilt-to-v-1"><div class="_1reo15vq _18m915vq _2rko18qm _1e0c1txw _kqswh2mm _p12f1osq _1bsb1osq _4t3i1osq _c71l1osq media-file-card-view" data-cursor="pointer" data-test-media-name="21.png" data-test-progress="1" data-test-source="remote" data-test-status="complete" data-testid="media-file-card-view"><div class="_kqswstnw _1bsb1osq _4t3i1osq _1e0c1txw _2lx21bp4 _1bah1h6o _4cvr1h6o align-center" data-testid="ImageRendererWrapper">![](blob:https://ecowiki.atlassian.net/6a9d869e-16fb-4bf6-9219-198079f85495#media-blob-url=true&id=e1780be3-b46d-4096-833f-bb6a7fd9ef6a&collection=contentId-512109&contextId=512109&width=728&height=372&alt=&clientId=113268fe-fe5b-4bc3-8ff3-07965dbf1d18)**Figure 221: <span data-highlighted="true" data-vc="highlighted-text">ILT</span> to <span data-highlighted="true" data-vc="highlighted-text">VLR</span> path combination with generic and cellular system**</div></div></div></div></div></div>[![image.png](https://wiki.cept.org/uploads/images/gallery/2026-04/scaled-1680-/WTpBkyGTo0exVcnB-image.png)](https://wiki.cept.org/uploads/images/gallery/2026-04/WTpBkyGTo0exVcnB-image.png)

<div class="rich-media-item mediaSingleView-content-wrap image-align-start css-jt2pz2" data-layout="align-start" data-media-vc-wrapper="true" data-node-type="mediaSingle" data-renderer-start-pos="218" data-vc="media-single" data-width="764" data-width-type="pixel" id="bkmrk-figure-222%3A-transmit"><div class="css-1mwpdu4"><div data-alt="" data-collection="contentId-512109" data-context-id="512109" data-file-mime-type="image/png" data-file-name="22.png" data-file-size="66343" data-height="670" data-id="eaf1c903-7470-4c79-998c-a0b9254a15d2" data-node-type="media" data-renderer-start-pos="219" data-type="file" data-width="1280"><div class="_2rko18qm _vchhusvi _kqswh2mm _ect4ttxp _p12f1osq _c71l1osq _1bsb1qmm _4t3ine4n _1hlmd0i9 _1rquusvi _eg541i5c _mts3kb7n _1ntskb7n _yfmhtlke _5sb1v00u new-file-experience-wrapper" data-media-vc-wrapper="true" data-testid="media-card-view" id="bkmrk-figure-222%3A-transmit-1"><div class="_1reo15vq _18m915vq _2rko18qm _1e0c1txw _kqswh2mm _p12f1osq _1bsb1osq _4t3i1osq _c71l1osq media-file-card-view" data-cursor="pointer" data-test-media-name="22.png" data-test-progress="1" data-test-source="remote" data-test-status="complete" data-testid="media-file-card-view"><div class="_kqswstnw _1bsb1osq _4t3i1osq _1e0c1txw _2lx21bp4 _1bah1h6o _4cvr1h6o align-center" data-testid="ImageRendererWrapper">![](blob:https://ecowiki.atlassian.net/d40bfa46-f3d4-4f78-ae18-e0f6afce5cf9#media-blob-url=true&id=eaf1c903-7470-4c79-998c-a0b9254a15d2&collection=contentId-512109&contextId=512109&width=1280&height=670&alt=&clientId=113268fe-fe5b-4bc3-8ff3-07965dbf1d18)**Figure 222: Transmitter to Victim Link Receiver Path (<span data-highlighted="true" data-vc="highlighted-text">ILT</span> -&gt; <span data-highlighted="true" data-vc="highlighted-text">VLR</span>)**</div></div></div></div></div></div>