What Is Cisco SRST? (Survivable Remote Site Telephony)<\/h1>
SRST<\/strong> (Survivable Remote Site Telephony) is a Cisco feature that allows branch office phones to continue functioning when the central CUCM server becomes unreachable due to WAN failure. This ensures uninterrupted calling capability for remote sites.<\/p>

Why SRST is Needed<\/h2>
In multi-site Cisco deployments, phones depend on CUCM for call control. If WAN goes down, phones lose service. SRST provides backup intelligence inside the router to keep phones working.<\/p>
How SRST Works<\/h2>

CUCM normally controls phones<\/li>
If WAN link fails \u2192 SRST router takes over<\/li>
Phones register automatically with SRST<\/li>
Basic features remain available<\/li> <\/ul>
Features Available in SRST Mode<\/h3>

Internal extension calling<\/li>
External PSTN calling (via gateway)<\/li>
Basic hold, transfer, forward<\/li>
Limited directory<\/li> <\/ul>
Example SRST Configuration<\/h2>
call-manager-fallback max-ephones 40 max-dn 80 ip source-address 192.168.10.1 port 2000 <\/pre>
SRST vs CME<\/h2>

Feature<\/th> SRST<\/th> CME<\/th><\/tr>
Purpose<\/td> Backup for CUCM<\/td> Standalone PBX<\/td><\/tr>
Function<\/td> Emergency call control<\/td> Primary call control<\/td><\/tr> <\/table>
Benefits of SRST<\/h2>

Ensures telephony continuity<\/li>
Reduces downtime<\/li>
Critical for branch offices<\/li> <\/ul>
Conclusion<\/h2>
SRST is a powerful failover mechanism ensuring remote sites continue calling even if central servers go offline. Every enterprise multi-site VoIP deployment should enable SRST to maintain business continuity and emergency calling functionality.<\/p> <\/div>\n<\/body>","protected":false},"excerpt":{"rendered":"
What Is Cisco SRST? (Survivable Remote Site Telephony) SRST (Survivable Remote Site Telephony) is a Cisco feature that allows branch office phones to continue functioning when the central CUCM server becomes unreachable due to WAN failure. This ensures uninterrupted calling capability for remote sites. Why SRST is Needed In multi-site Cisco deployments, phones depend on […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"pagelayer_contact_templates":[],"_pagelayer_content":"","footnotes":""},"categories":[3],"tags":[],"class_list":["post-51","post","type-post","status-publish","format-standard","hentry","category-network-voice"],"yoast_head":"\nWhat Is Cisco SRST? Easy Explanation - IPv4Chicken<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/ipv4chicken.com\/tech\/what-is-cisco-srst-easy-explanation\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What Is Cisco SRST? Easy Explanation - IPv4Chicken\" \/>\n<meta property=\"og:description\" content=\"What Is Cisco SRST? (Survivable Remote Site Telephony) SRST (Survivable Remote Site Telephony) is a Cisco feature that allows branch office phones to continue functioning when the central CUCM server becomes unreachable due to WAN failure. This ensures uninterrupted calling capability for remote sites. Why SRST is Needed In multi-site Cisco deployments, phones depend on […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/ipv4chicken.com\/tech\/what-is-cisco-srst-easy-explanation\/\" \/>\n<meta property=\"og:site_name\" content=\"IPv4Chicken\" \/>\n<meta property=\"article:published_time\" content=\"2025-11-05T18:42:14+00:00\" \/>\n<meta name=\"author\" content=\"admin\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"admin\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/ipv4chicken.com\\\/tech\\\/what-is-cisco-srst-easy-explanation\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/ipv4chicken.com\\\/tech\\\/what-is-cisco-srst-easy-explanation\\\/\"},\"author\":{\"name\":\"admin\",\"@id\":\"https:\\\/\\\/ipv4chicken.com\\\/tech\\\/#\\\/schema\\\/person\\\/1d835bee6b0fb8ea8238f34395837ddf\"},\"headline\":\"What Is Cisco SRST? Easy Explanation\",\"datePublished\":\"2025-11-05T18:42:14+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/ipv4chicken.com\\\/tech\\\/what-is-cisco-srst-easy-explanation\\\/\"},\"wordCount\":194,\"commentCount\":0,\"articleSection\":[\"Network Voice\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/ipv4chicken.com\\\/tech\\\/what-is-cisco-srst-easy-explanation\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/ipv4chicken.com\\\/tech\\\/what-is-cisco-srst-easy-explanation\\\/\",\"url\":\"https:\\\/\\\/ipv4chicken.com\\\/tech\\\/what-is-cisco-srst-easy-explanation\\\/\",\"name\":\"What Is Cisco SRST? Easy Explanation - IPv4Chicken\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/ipv4chicken.com\\\/tech\\\/#website\"},\"datePublished\":\"2025-11-05T18:42:14+00:00\",\"author\":{\"@id\":\"https:\\\/\\\/ipv4chicken.com\\\/tech\\\/#\\\/schema\\\/person\\\/1d835bee6b0fb8ea8238f34395837ddf\"},\"breadcrumb\":{\"@id\":\"https:\\\/\\\/ipv4chicken.com\\\/tech\\\/what-is-cisco-srst-easy-explanation\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/ipv4chicken.com\\\/tech\\\/what-is-cisco-srst-easy-explanation\\\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/ipv4chicken.com\\\/tech\\\/what-is-cisco-srst-easy-explanation\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/ipv4chicken.com\\\/tech\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"What Is Cisco SRST? Easy Explanation\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/ipv4chicken.com\\\/tech\\\/#website\",\"url\":\"https:\\\/\\\/ipv4chicken.com\\\/tech\\\/\",\"name\":\"IPv4Chicken\",\"description\":\"Technical SOP\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/ipv4chicken.com\\\/tech\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/ipv4chicken.com\\\/tech\\\/#\\\/schema\\\/person\\\/1d835bee6b0fb8ea8238f34395837ddf\",\"name\":\"admin\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/4ff63f3440b165262c0e90314cb9071362406be85a27a08760ee3141345e6974?s=96&d=mm&r=g\",\"url\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/4ff63f3440b165262c0e90314cb9071362406be85a27a08760ee3141345e6974?s=96&d=mm&r=g\",\"contentUrl\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/4ff63f3440b165262c0e90314cb9071362406be85a27a08760ee3141345e6974?s=96&d=mm&r=g\",\"caption\":\"admin\"},\"sameAs\":[\"https:\\\/\\\/ipv4chicken.com\\\/tech\"],\"url\":\"https:\\\/\\\/ipv4chicken.com\\\/tech\\\/author\\\/admin\\\/\"}]}<\/script>\n","yoast_head_json":{"title":"What Is Cisco SRST? Easy Explanation - IPv4Chicken","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/ipv4chicken.com\/tech\/what-is-cisco-srst-easy-explanation\/","og_locale":"en_US","og_type":"article","og_title":"What Is Cisco SRST? Easy Explanation - IPv4Chicken","og_description":"What Is Cisco SRST? (Survivable Remote Site Telephony) SRST (Survivable Remote Site Telephony) is a Cisco feature that allows branch office phones to continue functioning when the central CUCM server becomes unreachable due to WAN failure. This ensures uninterrupted calling capability for remote sites. Why SRST is Needed In multi-site Cisco deployments, phones depend on […]","og_url":"https:\/\/ipv4chicken.com\/tech\/what-is-cisco-srst-easy-explanation\/","og_site_name":"IPv4Chicken","article_published_time":"2025-11-05T18:42:14+00:00","author":"admin","twitter_card":"summary_large_image","twitter_misc":{"Written by":"admin","Est. reading time":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/ipv4chicken.com\/tech\/what-is-cisco-srst-easy-explanation\/#article","isPartOf":{"@id":"https:\/\/ipv4chicken.com\/tech\/what-is-cisco-srst-easy-explanation\/"},"author":{"name":"admin","@id":"https:\/\/ipv4chicken.com\/tech\/#\/schema\/person\/1d835bee6b0fb8ea8238f34395837ddf"},"headline":"What Is Cisco SRST? Easy Explanation","datePublished":"2025-11-05T18:42:14+00:00","mainEntityOfPage":{"@id":"https:\/\/ipv4chicken.com\/tech\/what-is-cisco-srst-easy-explanation\/"},"wordCount":194,"commentCount":0,"articleSection":["Network Voice"],"inLanguage":"en-US","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/ipv4chicken.com\/tech\/what-is-cisco-srst-easy-explanation\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/ipv4chicken.com\/tech\/what-is-cisco-srst-easy-explanation\/","url":"https:\/\/ipv4chicken.com\/tech\/what-is-cisco-srst-easy-explanation\/","name":"What Is Cisco SRST? Easy Explanation - IPv4Chicken","isPartOf":{"@id":"https:\/\/ipv4chicken.com\/tech\/#website"},"datePublished":"2025-11-05T18:42:14+00:00","author":{"@id":"https:\/\/ipv4chicken.com\/tech\/#\/schema\/person\/1d835bee6b0fb8ea8238f34395837ddf"},"breadcrumb":{"@id":"https:\/\/ipv4chicken.com\/tech\/what-is-cisco-srst-easy-explanation\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/ipv4chicken.com\/tech\/what-is-cisco-srst-easy-explanation\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/ipv4chicken.com\/tech\/what-is-cisco-srst-easy-explanation\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/ipv4chicken.com\/tech\/"},{"@type":"ListItem","position":2,"name":"What Is Cisco SRST? Easy Explanation"}]},{"@type":"WebSite","@id":"https:\/\/ipv4chicken.com\/tech\/#website","url":"https:\/\/ipv4chicken.com\/tech\/","name":"IPv4Chicken","description":"Technical SOP","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/ipv4chicken.com\/tech\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Person","@id":"https:\/\/ipv4chicken.com\/tech\/#\/schema\/person\/1d835bee6b0fb8ea8238f34395837ddf","name":"admin","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/secure.gravatar.com\/avatar\/4ff63f3440b165262c0e90314cb9071362406be85a27a08760ee3141345e6974?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/4ff63f3440b165262c0e90314cb9071362406be85a27a08760ee3141345e6974?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/4ff63f3440b165262c0e90314cb9071362406be85a27a08760ee3141345e6974?s=96&d=mm&r=g","caption":"admin"},"sameAs":["https:\/\/ipv4chicken.com\/tech"],"url":"https:\/\/ipv4chicken.com\/tech\/author\/admin\/"}]}},"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/ipv4chicken.com\/tech\/wp-json\/wp\/v2\/posts\/51","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ipv4chicken.com\/tech\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ipv4chicken.com\/tech\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ipv4chicken.com\/tech\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ipv4chicken.com\/tech\/wp-json\/wp\/v2\/comments?post=51"}],"version-history":[{"count":0,"href":"https:\/\/ipv4chicken.com\/tech\/wp-json\/wp\/v2\/posts\/51\/revisions"}],"wp:attachment":[{"href":"https:\/\/ipv4chicken.com\/tech\/wp-json\/wp\/v2\/media?parent=51"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ipv4chicken.com\/tech\/wp-json\/wp\/v2\/categories?post=51"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ipv4chicken.com\/tech\/wp-json\/wp\/v2\/tags?post=51"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}

Feature<\/th>	SRST<\/th>	CME<\/th><\/tr>
Purpose<\/td>	Backup for CUCM<\/td>	Standalone PBX<\/td><\/tr>
Function<\/td>	Emergency call control<\/td>	Primary call control<\/td><\/tr> <\/table> Benefits of SRST<\/h2> Ensures telephony continuity<\/li> Reduces downtime<\/li> Critical for branch offices<\/li> <\/ul> Conclusion<\/h2> SRST is a powerful failover mechanism ensuring remote sites continue calling even if central servers go offline. Every enterprise multi-site VoIP deployment should enable SRST to maintain business continuity and emergency calling functionality.<\/p> <\/div>\n<\/body>","protected":false},"excerpt":{"rendered":" What Is Cisco SRST? (Survivable Remote Site Telephony) SRST (Survivable Remote Site Telephony) is a Cisco feature that allows branch office phones to continue functioning when the central CUCM server becomes unreachable due to WAN failure. This ensures uninterrupted calling capability for remote sites. Why SRST is Needed In multi-site Cisco deployments, phones depend on […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"pagelayer_contact_templates":[],"_pagelayer_content":"","footnotes":""},"categories":[3],"tags":[],"class_list":["post-51","post","type-post","status-publish","format-standard","hentry","category-network-voice"],"yoast_head":"\nWhat Is Cisco SRST? Easy Explanation - IPv4Chicken<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/ipv4chicken.com\/tech\/what-is-cisco-srst-easy-explanation\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What Is Cisco SRST? Easy Explanation - IPv4Chicken\" \/>\n<meta property=\"og:description\" content=\"What Is Cisco SRST? (Survivable Remote Site Telephony) SRST (Survivable Remote Site Telephony) is a Cisco feature that allows branch office phones to continue functioning when the central CUCM server becomes unreachable due to WAN failure. This ensures uninterrupted calling capability for remote sites. Why SRST is Needed In multi-site Cisco deployments, phones depend on […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/ipv4chicken.com\/tech\/what-is-cisco-srst-easy-explanation\/\" \/>\n<meta property=\"og:site_name\" content=\"IPv4Chicken\" \/>\n<meta property=\"article:published_time\" content=\"2025-11-05T18:42:14+00:00\" \/>\n<meta name=\"author\" content=\"admin\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"admin\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/ipv4chicken.com\\\/tech\\\/what-is-cisco-srst-easy-explanation\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/ipv4chicken.com\\\/tech\\\/what-is-cisco-srst-easy-explanation\\\/\"},\"author\":{\"name\":\"admin\",\"@id\":\"https:\\\/\\\/ipv4chicken.com\\\/tech\\\/#\\\/schema\\\/person\\\/1d835bee6b0fb8ea8238f34395837ddf\"},\"headline\":\"What Is Cisco SRST? Easy Explanation\",\"datePublished\":\"2025-11-05T18:42:14+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/ipv4chicken.com\\\/tech\\\/what-is-cisco-srst-easy-explanation\\\/\"},\"wordCount\":194,\"commentCount\":0,\"articleSection\":[\"Network Voice\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/ipv4chicken.com\\\/tech\\\/what-is-cisco-srst-easy-explanation\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/ipv4chicken.com\\\/tech\\\/what-is-cisco-srst-easy-explanation\\\/\",\"url\":\"https:\\\/\\\/ipv4chicken.com\\\/tech\\\/what-is-cisco-srst-easy-explanation\\\/\",\"name\":\"What Is Cisco SRST? Easy Explanation - IPv4Chicken\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/ipv4chicken.com\\\/tech\\\/#website\"},\"datePublished\":\"2025-11-05T18:42:14+00:00\",\"author\":{\"@id\":\"https:\\\/\\\/ipv4chicken.com\\\/tech\\\/#\\\/schema\\\/person\\\/1d835bee6b0fb8ea8238f34395837ddf\"},\"breadcrumb\":{\"@id\":\"https:\\\/\\\/ipv4chicken.com\\\/tech\\\/what-is-cisco-srst-easy-explanation\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/ipv4chicken.com\\\/tech\\\/what-is-cisco-srst-easy-explanation\\\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/ipv4chicken.com\\\/tech\\\/what-is-cisco-srst-easy-explanation\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/ipv4chicken.com\\\/tech\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"What Is Cisco SRST? Easy Explanation\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/ipv4chicken.com\\\/tech\\\/#website\",\"url\":\"https:\\\/\\\/ipv4chicken.com\\\/tech\\\/\",\"name\":\"IPv4Chicken\",\"description\":\"Technical SOP\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/ipv4chicken.com\\\/tech\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/ipv4chicken.com\\\/tech\\\/#\\\/schema\\\/person\\\/1d835bee6b0fb8ea8238f34395837ddf\",\"name\":\"admin\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/4ff63f3440b165262c0e90314cb9071362406be85a27a08760ee3141345e6974?s=96&d=mm&r=g\",\"url\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/4ff63f3440b165262c0e90314cb9071362406be85a27a08760ee3141345e6974?s=96&d=mm&r=g\",\"contentUrl\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/4ff63f3440b165262c0e90314cb9071362406be85a27a08760ee3141345e6974?s=96&d=mm&r=g\",\"caption\":\"admin\"},\"sameAs\":[\"https:\\\/\\\/ipv4chicken.com\\\/tech\"],\"url\":\"https:\\\/\\\/ipv4chicken.com\\\/tech\\\/author\\\/admin\\\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"What Is Cisco SRST? Easy Explanation - IPv4Chicken","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/ipv4chicken.com\/tech\/what-is-cisco-srst-easy-explanation\/","og_locale":"en_US","og_type":"article","og_title":"What Is Cisco SRST? Easy Explanation - IPv4Chicken","og_description":"What Is Cisco SRST? (Survivable Remote Site Telephony) SRST (Survivable Remote Site Telephony) is a Cisco feature that allows branch office phones to continue functioning when the central CUCM server becomes unreachable due to WAN failure. This ensures uninterrupted calling capability for remote sites. Why SRST is Needed In multi-site Cisco deployments, phones depend on […]","og_url":"https:\/\/ipv4chicken.com\/tech\/what-is-cisco-srst-easy-explanation\/","og_site_name":"IPv4Chicken","article_published_time":"2025-11-05T18:42:14+00:00","author":"admin","twitter_card":"summary_large_image","twitter_misc":{"Written by":"admin","Est. reading time":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/ipv4chicken.com\/tech\/what-is-cisco-srst-easy-explanation\/#article","isPartOf":{"@id":"https:\/\/ipv4chicken.com\/tech\/what-is-cisco-srst-easy-explanation\/"},"author":{"name":"admin","@id":"https:\/\/ipv4chicken.com\/tech\/#\/schema\/person\/1d835bee6b0fb8ea8238f34395837ddf"},"headline":"What Is Cisco SRST? Easy Explanation","datePublished":"2025-11-05T18:42:14+00:00","mainEntityOfPage":{"@id":"https:\/\/ipv4chicken.com\/tech\/what-is-cisco-srst-easy-explanation\/"},"wordCount":194,"commentCount":0,"articleSection":["Network Voice"],"inLanguage":"en-US","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/ipv4chicken.com\/tech\/what-is-cisco-srst-easy-explanation\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/ipv4chicken.com\/tech\/what-is-cisco-srst-easy-explanation\/","url":"https:\/\/ipv4chicken.com\/tech\/what-is-cisco-srst-easy-explanation\/","name":"What Is Cisco SRST? Easy Explanation - IPv4Chicken","isPartOf":{"@id":"https:\/\/ipv4chicken.com\/tech\/#website"},"datePublished":"2025-11-05T18:42:14+00:00","author":{"@id":"https:\/\/ipv4chicken.com\/tech\/#\/schema\/person\/1d835bee6b0fb8ea8238f34395837ddf"},"breadcrumb":{"@id":"https:\/\/ipv4chicken.com\/tech\/what-is-cisco-srst-easy-explanation\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/ipv4chicken.com\/tech\/what-is-cisco-srst-easy-explanation\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/ipv4chicken.com\/tech\/what-is-cisco-srst-easy-explanation\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/ipv4chicken.com\/tech\/"},{"@type":"ListItem","position":2,"name":"What Is Cisco SRST? Easy Explanation"}]},{"@type":"WebSite","@id":"https:\/\/ipv4chicken.com\/tech\/#website","url":"https:\/\/ipv4chicken.com\/tech\/","name":"IPv4Chicken","description":"Technical SOP","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/ipv4chicken.com\/tech\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Person","@id":"https:\/\/ipv4chicken.com\/tech\/#\/schema\/person\/1d835bee6b0fb8ea8238f34395837ddf","name":"admin","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/secure.gravatar.com\/avatar\/4ff63f3440b165262c0e90314cb9071362406be85a27a08760ee3141345e6974?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/4ff63f3440b165262c0e90314cb9071362406be85a27a08760ee3141345e6974?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/4ff63f3440b165262c0e90314cb9071362406be85a27a08760ee3141345e6974?s=96&d=mm&r=g","caption":"admin"},"sameAs":["https:\/\/ipv4chicken.com\/tech"],"url":"https:\/\/ipv4chicken.com\/tech\/author\/admin\/"}]}},"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/ipv4chicken.com\/tech\/wp-json\/wp\/v2\/posts\/51","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ipv4chicken.com\/tech\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ipv4chicken.com\/tech\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ipv4chicken.com\/tech\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ipv4chicken.com\/tech\/wp-json\/wp\/v2\/comments?post=51"}],"version-history":[{"count":0,"href":"https:\/\/ipv4chicken.com\/tech\/wp-json\/wp\/v2\/posts\/51\/revisions"}],"wp:attachment":[{"href":"https:\/\/ipv4chicken.com\/tech\/wp-json\/wp\/v2\/media?parent=51"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ipv4chicken.com\/tech\/wp-json\/wp\/v2\/categories?post=51"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ipv4chicken.com\/tech\/wp-json\/wp\/v2\/tags?post=51"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}