{"id":3516,"date":"2026-05-12T07:35:50","date_gmt":"2026-05-12T07:35:50","guid":{"rendered":"https:\/\/lp.szlogic.cn\/knowledge-center\/ieee-802-3cd-50g-100g-200g-pam4-ethernet\/"},"modified":"2026-05-26T07:48:49","modified_gmt":"2026-05-26T07:48:49","slug":"ieee-802-3cd-50g-100g-200g-pam4-ethernet","status":"publish","type":"post","link":"https:\/\/lp.szlogic.cn\/ru\/knowledge-center\/ieee-802-3cd-50g-100g-200g-pam4-ethernet","title":{"rendered":"IEEE 802.3cd Explained: 50G, 100G &#038; 200G Ethernet with PAM4"},"content":{"rendered":"<figure class=\"wp-block-image aligncenter size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1200\" height=\"712\" src=\"https:\/\/lp.szlogic.cn\/wp-content\/uploads\/2026\/05\/882b27eb378945618d369548c34c2540.webp\" alt=\"What Is IEEE 802.3cd?\" class=\"wp-image-3513\" srcset=\"https:\/\/lp.szlogic.cn\/wp-content\/uploads\/2026\/05\/882b27eb378945618d369548c34c2540.webp 1200w, https:\/\/lp.szlogic.cn\/wp-content\/uploads\/2026\/05\/882b27eb378945618d369548c34c2540-300x178.webp 300w, https:\/\/lp.szlogic.cn\/wp-content\/uploads\/2026\/05\/882b27eb378945618d369548c34c2540-1024x608.webp 1024w, https:\/\/lp.szlogic.cn\/wp-content\/uploads\/2026\/05\/882b27eb378945618d369548c34c2540-768x456.webp 768w, https:\/\/lp.szlogic.cn\/wp-content\/uploads\/2026\/05\/882b27eb378945618d369548c34c2540-18x12.webp 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" >&#x1f4cc; What Is IEEE 802.3cd?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">IEEE 802.3cd is the Ethernet standard that defines Physical Layer (PHY) and <a target=\"_blank\" rel=\"\" href=\"https:\/\/resources.l-p.com\/glossary\/what-is-physical-medium-dependent-pmd\">Physical Medium Dependent (PMD)<\/a> specifications for <strong>50 GbE, 100 GbE and 200 GbE<\/strong> networks using <strong>50G PAM4 lanes<\/strong>. Finalized in 2018, the standard introduced single-lane 50G signaling and multi-lane combinations (2\u00d750G and 4\u00d750G), enabling scalable high-speed Ethernet with improved port efficiency and reduced cost per bit.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The standard plays a central role in modern data centers, where PAM4 optical transceivers\u2014particularly <strong>SFP56, <\/strong><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/491591.htm\"><strong>QSFP28<\/strong><\/a><strong>, QSFP56, and QSFP-DD<\/strong>\u2014are widely deployed in 25G-to-200G migration paths.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >&#x1f4cc; Why IEEE 802.3cd Uses PAM4 Modulation<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A defining feature of 802.3cd is the transition from NRZ (PAM2) to <a target=\"_blank\" rel=\"\" href=\"https:\/\/resources.l-p.com\/glossary\/what-is-pam4-four-level-pulse-amplitude-modulation-basics\"><strong>PAM4<\/strong> modulation<\/a>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >Key Advantages of PAM4<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>Higher data density:<\/strong> PAM4 encodes two bits per symbol, effectively doubling throughput within the same bandwidth.<\/p><\/li><li><p><strong>Single-lane 50G feasibility:<\/strong> Achieves 50 Gb\/s per lane at approximately 50 GBd symbol rate.<\/p><\/li><li><p><strong>Better scalability:<\/strong> Enables 50G \u2192 100G \u2192 200G bandwidth expansion without redesigning port form factors.<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">With PAM4, Ethernet could evolve using familiar module formats while supporting much higher aggregate speeds.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >&#x1f4cc; PMDs and Interface Types Defined Under IEEE 802.3cd<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" >50 GbE PMDs<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>50GBASE-SR<\/strong> \u2013 Short-reach multimode fiber using a single 50G PAM4 lane.<\/p><\/li><li><p><strong>50GBASE-FR<\/strong> \u2013 Single-mode fiber, typically up to 2 km.<\/p><\/li><li><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/491591.htm\"><strong>50GBASE-LR<\/strong><\/a> \u2013 SMF with 10 km reach for campus and metro applications.<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >100 GbE PMDs (2\u00d750G)<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>100GBASE-FR2<\/strong> \u2013 Two PAM4 lanes over SMF, moderate reach.<\/p><\/li><li><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/491583.htm\"><strong>100GBASE-LR2<\/strong><\/a> \u2013 Two-lane long-reach SMF applications.<\/p><\/li><li><p><strong>100GBASE-DR\/DR2<\/strong> \u2013 Optimized for data center short-to-medium SMF links.<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >200 GbE PMDs (4\u00d750G)<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/473139.htm\"><strong>200GBASE-SR4<\/strong><\/a> \u2013 Four 50G lanes on parallel MMF; ideal for high-density leaf\/spine connectivity.<\/p><\/li><li><p><strong>200GBASE-FR4 \/ LR4<\/strong> \u2013 Four-lane SMF solutions enabling 2 km and 10 km reaches, respectively.<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">802.3cd defines electrical and optical parameters for these interfaces, including TDECQ, transmitter OMAouter, receiver sensitivity, and lane-by-lane BER objectives.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >&#x1f4cc; Deployment Use Cases in Modern Data Centers<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" >1. Single-Lane 50G for Servers<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Many hyperscale and enterprise data centers adopt <strong>50G SFP56<\/strong> interfaces for server access links, replacing 25G as the standard node bandwidth.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >2. 100G as an Uplink Tier<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Using 2\u00d750G lanes, 100G links remain a primary aggregation layer between Top-of-Rack (ToR) and leaf switches. <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/472577.htm\">100G QSFP28<\/a> or SFP-DD modules offer efficient density and backward compatibility.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >3. 200G for Leaf-to-Spine Fabrics<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/473139.htm\">200G QSFP56<\/a> or QSFP-DD transceivers enable four-lane 50G architectures with breakout flexibility. A single 200G port can be split into <strong>4\u00d750G<\/strong> for servers or aggregation nodes.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >4. Breakout Flexibility<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The lane-based architecture makes 802.3cd ideal for:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>200G QSFP56 \u2192 4\u00d750G SFP56<\/p><\/li><li><p>100G QSFP28 \u2192 2\u00d750G SFP56<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">This aligns well with next-generation 25G-to-50G server transitions.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >&#x1f4cc; Selecting the Right Optical Transceivers for IEEE 802.3cd<\/h2>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img decoding=\"async\" width=\"1200\" height=\"712\" src=\"https:\/\/lp.szlogic.cn\/wp-content\/uploads\/2026\/05\/6e8b859454564c7783bcadfeaf9ad480.webp\" alt=\"802.3cd-compliant optical transceivers\" class=\"wp-image-3514\" srcset=\"https:\/\/lp.szlogic.cn\/wp-content\/uploads\/2026\/05\/6e8b859454564c7783bcadfeaf9ad480.webp 1200w, https:\/\/lp.szlogic.cn\/wp-content\/uploads\/2026\/05\/6e8b859454564c7783bcadfeaf9ad480-300x178.webp 300w, https:\/\/lp.szlogic.cn\/wp-content\/uploads\/2026\/05\/6e8b859454564c7783bcadfeaf9ad480-1024x608.webp 1024w, https:\/\/lp.szlogic.cn\/wp-content\/uploads\/2026\/05\/6e8b859454564c7783bcadfeaf9ad480-768x456.webp 768w, https:\/\/lp.szlogic.cn\/wp-content\/uploads\/2026\/05\/6e8b859454564c7783bcadfeaf9ad480-18x12.webp 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">When planning a 50G\/100G\/200G network, transceiver selection must match <a target=\"_blank\" rel=\"\" href=\"https:\/\/resources.l-p.com\/glossary\/what-is-physical-medium-dependent-pmd\">PMD<\/a> type, fiber reach and switch port form factor.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For IEEE 802.3cd deployments, LINK-PP provides the following product categories:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >\u25b7 50G Optical Transceivers (SFP56 \/ QSFP28)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">For single-lane 50GBASE-SR\/FR\/LR and 50G server access:<br\/>&#x1f517; <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-27046-50g-qsfp28-sfp56.htm\">https:\/\/www.l-p.com\/store-27046-50g-qsfp28-sfp56.htm<\/a><\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >\u25b7 100G Optical Transceivers (QSFP28 \/ SFP-DD)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Ideal for 2\u00d750G uplinks, 100G spine aggregation, and DR\/FR\/LR applications:<br\/>&#x1f517; <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-27045-100g-qsfp28-sfp-dd.htm\">https:\/\/www.l-p.com\/store-27045-100g-qsfp28-sfp-dd.htm<\/a><\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >\u25b7 200G Optical Transceivers (QSFP-DD \/ QSFP56)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Designed for 4\u00d750G leaf-spine fabrics and breakout compatibility:<br\/>&#x1f517; <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-26224-200g-qsfp-dd-qsfp56.htm\">https:\/\/www.l-p.com\/store-26224-200g-qsfp-dd-qsfp56.htm<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">These modules support PAM4 signaling and meet IEEE interoperability targets such as TDECQ performance, receiver sensitivity, and lane BER consistency.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >&#x1f4cc; Interoperability and Validation Checklist<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">To ensure reliable 802.3cd deployment, engineers typically verify:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>Correct PMD type<\/strong> (SR, FR, LR, DR) for link budget and reach.<\/p><\/li><li><p><strong>Form factor matching<\/strong> (SFP56, QSFP28, QSFP56, QSFP-DD).<\/p><\/li><li><p><strong>Optical power levels<\/strong> including OMAouter and average launch power.<\/p><\/li><li><p><strong>Receiver sensitivity<\/strong> under stressed PAM4 conditions.<\/p><\/li><li><p><strong>Lane BER targets<\/strong> and <a target=\"_blank\" rel=\"\" href=\"https:\/\/resources.l-p.com\/glossary\/fec-forward-error-correction-in-optical-communication\">FEC<\/a> compatibility.<\/p><\/li><li><p><strong>Breakout mapping<\/strong> when mixing 200G &#x2194; 50G endpoints.<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" >&#x1f4cc; Conclusion<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">IEEE 802.3cd established the technical building blocks for today\u2019s <strong>50G, 100G ,and 200G Ethernet<\/strong>, bringing <a target=\"_blank\" rel=\"\" href=\"https:\/\/resources.l-p.com\/glossary\/what-is-pam4-four-level-pulse-amplitude-modulation-basics\">PAM4 modulation<\/a> into mainstream deployment. Its lane-based architecture enables scalable, cost-efficient bandwidth upgrades while maintaining familiar module formats.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">As data centers continue migrating from 25G and 40G to higher-speed fabrics, <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/473139.htm\">802.3cd-compliant optical transceivers<\/a>\u2014such as LINK-PP\u2019s 50G\/100G\/200G product families\u2014provide a reliable foundation for next-generation connectivity.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For detailed specifications and product selection, explore <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-25432-optics-transceivers-sfp-modules.htm\">LINK-PP\u2019s<\/a> full range of IEEE 802.3cd-compatible transceivers.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >&#x1f4cc; Key Optical &amp; Electrical Terms in IEEE 802.3cd (Mini Glossary)<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" >\u2605 TDECQ (Transmitter and Dispersion Eye Closure for PAM4)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">TDECQ is a transmitter quality metric used in PAM4-based interfaces. It quantifies how much the optical eye diagram \u201ccloses\u201d after the signal experiences dispersion, noise and other channel impairments. A <strong>lower TDECQ value<\/strong> indicates a cleaner PAM4 signal with better link margin. IEEE 802.3cd uses TDECQ as a primary requirement for 50G, 100G and 200G optical transmitters.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >\u2605 OMAouter (Outer Optical Modulation Amplitude)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">OMAouter represents the <strong>difference between the highest and lowest optical power levels<\/strong> (Level 3 and Level 0) in a PAM4 signal. Since PAM4 uses four discrete levels, OMAouter provides a more accurate representation of modulation depth than average power. A <strong>higher OMAouter<\/strong> generally improves receiver sensitivity and helps ensure standards-compliant performance for 50GBASE-SR\/FR\/LR and multi-lane variants.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >\u2605 BER (Bit Error Rate)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><a target=\"_blank\" rel=\"\" href=\"https:\/\/resources.l-p.com\/glossary\/understanding-what-is-bit-error-rate\">BER<\/a> measures the ratio of erroneous bits to the total number of transmitted bits. IEEE 802.3cd specifies <strong>lane-by-lane BER objectives<\/strong>, typically using a <strong>pre-FEC BER target of 2.4\u00d710\u207b\u2074<\/strong> for PAM4 lanes. With strong Forward Error Correction (such as KP4 FEC), the post-FEC BER achieves the reliability required for hyperscale and cloud data-center networks.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >&#x1f4cc; FAQ<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" >1. What is IEEE 802.3cd?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">IEEE 802.3cd is an Ethernet standard that defines physical layer specifications for <strong>50GbE, 100GbE, and 200GbE<\/strong> using <strong>PAM4 modulation<\/strong>. It includes interfaces such as <strong>50GBASE-SR\/FR\/LR<\/strong>, <strong>100GBASE-SR2<\/strong>, and <strong>200GBASE-SR4<\/strong>, targeting modern data-center and high-performance networking environments.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >2. What modulation format does IEEE 802.3cd use?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">IEEE 802.3cd mandates <a target=\"_blank\" rel=\"\" href=\"https:\/\/resources.l-p.com\/glossary\/what-is-physical-medium-dependent-pmd\"><strong>PAM4 (4-level Pulse Amplitude Modulation)<\/strong><\/a> for all 50G-per-lane interfaces. PAM4 doubles the bit rate per lane compared with NRZ while keeping the same baud rate, enabling scalable 50G, 100G, and 200G Ethernet architectures.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >3. Does IEEE 802.3cd support backward compatibility with NRZ?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Yes, in many deployments PAM4-based links can coexist with NRZ interfaces <strong>as long as the host port, electrical interface, and optical module are designed to support mixed environments<\/strong>. However, PAM4 and NRZ cannot interoperate on a single link; both ends must use the same modulation format.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >4. What are the typical use cases of IEEE 802.3cd?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">IEEE 802.3cd is widely used for:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>50G server access (SFP56, QSFP28)<\/p><\/li><li><p>100G spine\/aggregation layers<\/p><\/li><li><p>200G leaf-spine fabrics<\/p><\/li><li><p>Cloud, AI\/ML clusters, and hyperscale networks<\/p><\/li><li><p>50G-per-lane uplinks in modular architectures (2\u00d750G, 4\u00d750G)<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >5. What optical transceivers are compliant with IEEE 802.3cd?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">IEEE 802.3cd supports a wide range of 50G, 100G, and 200G optical modules, including:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>50GBASE-SR\/FR\/LR<\/strong> (SFP56 \/ QSFP28) for single-lane 50GbE<\/p><\/li><li><p><strong>100GBASE-SR2<\/strong> and 2\u00d750G breakout modules (QSFP28 \/ SFP-DD)<\/p><\/li><li><p><strong>200GBASE-SR4\/DR4\/FR4<\/strong> (QSFP-DD \/ QSFP56)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-25432-optics-transceivers-sfp-modules.htm\">LINK-PP<\/a> provides IEEE 802.3cd-compliant options across all speed classes.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >6. How does IEEE 802.3cd relate to IEEE 802.3bs (400G) and 802.3cu?<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/resources.l-p.com\/knowledge-center\/ieee-802-3bs-200g-400g-ethernet-standard\"><strong>802.3bs<\/strong><\/a> defines 400GbE and also relies on 50G lanes but focuses on higher-lane-count architectures (e.g., 8\u00d750G).<\/p><\/li><li><p><strong>802.3cu<\/strong> extends 100G\/400G to longer-reach SMF applications (DR\/FR\/LR).<\/p><\/li><li><p><strong>802.3cd<\/strong> fills the gap for <strong>single-lane and multi-lane 50G-per-lane Ethernet<\/strong>, enabling scalable migration paths from 25G \u2192 50G \u2192 100G\/200G \u2192 400G.<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >7. Is IEEE 802.3cd suitable for next-generation AI\/ML and HPC workloads?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Yes. The standard\u2019s <strong>50G-per-lane PAM4 architecture<\/strong> aligns with high-bandwidth fabrics used in AI clusters, <a target=\"_blank\" rel=\"\" href=\"https:\/\/resources.l-p.com\/glossary\/what-is-hpc-high-performance-computing\">HPC systems<\/a>, and large-scale GPU networks. It enables low-latency spine-leaf topologies with flexible breakout options such as 4\u00d750G or 2\u00d7100G.<\/p>","protected":false},"excerpt":{"rendered":"<p>Learn what IEEE 802.3cd defines for 50G, 100G and 200G Ethernet. Explore PAM4 technology, key PMDs, deployment use cases and suitable LINK-PP optical transceivers.<\/p>","protected":false},"author":1,"featured_media":3515,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[13,24,26],"class_list":["post-3516","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-knowledge-center","tag-100g-modules","tag-link-pp","tag-optics-transceivers"],"blocksy_meta":[],"acf":[],"_links":{"self":[{"href":"https:\/\/lp.szlogic.cn\/ru\/wp-json\/wp\/v2\/posts\/3516","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lp.szlogic.cn\/ru\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lp.szlogic.cn\/ru\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lp.szlogic.cn\/ru\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/lp.szlogic.cn\/ru\/wp-json\/wp\/v2\/comments?post=3516"}],"version-history":[{"count":2,"href":"https:\/\/lp.szlogic.cn\/ru\/wp-json\/wp\/v2\/posts\/3516\/revisions"}],"predecessor-version":[{"id":8053,"href":"https:\/\/lp.szlogic.cn\/ru\/wp-json\/wp\/v2\/posts\/3516\/revisions\/8053"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/lp.szlogic.cn\/ru\/wp-json\/wp\/v2\/media\/3515"}],"wp:attachment":[{"href":"https:\/\/lp.szlogic.cn\/ru\/wp-json\/wp\/v2\/media?parent=3516"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lp.szlogic.cn\/ru\/wp-json\/wp\/v2\/categories?post=3516"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lp.szlogic.cn\/ru\/wp-json\/wp\/v2\/tags?post=3516"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}