{"id":497,"date":"2026-09-16T11:52:22","date_gmt":"2026-09-16T14:52:22","guid":{"rendered":"https:\/\/orlandoneto.com\/?page_id=497"},"modified":"2026-09-16T14:04:47","modified_gmt":"2026-09-16T17:04:47","slug":"rel-sip","status":"publish","type":"page","link":"https:\/\/orlandoneto.com\/index.php\/rel-sip\/","title":{"rendered":"rel-sip"},"content":{"rendered":"\n
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SIP < > Q.850<\/h3><\/div><\/div>

Entenda como as causas de sinaliza\u00e7\u00e3o telef\u00f4nica (Q.850\/REL) podem ser transportadas, mapeadas e interpretadas no contexto SIP\/VoIP<\/p><\/div><\/div>\n<\/div><\/div>\n\n\n\n

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Como funciona?<\/h3><\/div><\/div>

O c\u00f3digo SIP e a causa Q.850 n\u00e3o s\u00e3o equivalentes. A rela\u00e7\u00e3o entre eles depende do elemento de rede, da tecnologia e do contexto da chamada. A tabela abaixo mostra as rela\u00e7\u00f5es mais comuns e poss\u00edveis cen\u00e1rios de interconex\u00e3o.<\/p><\/div><\/div>\n<\/div>\n\n\n\n

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SIP<\/h3><\/div>

(resposta)<\/p><\/div><\/div>\n<\/div>\n<\/div>\n\n\n\n

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Getway\/SBC<\/h3><\/div>

(interconex\u00e3o)<\/p><\/div><\/div>\n<\/div>\n<\/div>\n\n\n\n

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Q.850\/REL<\/h3><\/div>

(causa)<\/p><\/div><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n

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C\u00f3digo SIP<\/div><\/div>\n<\/div>\n\n\n\n
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Mensagem SIP<\/div><\/div>\n<\/div>\n\n\n\n
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Poss\u00edveis causas REL<\/div><\/div>\n<\/div>\n\n\n\n
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Cen\u00e1rios comuns<\/div><\/div>\n<\/div>\n\n\n\n
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Onde investigar<\/div><\/div>\n<\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n
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100<\/a><\/div>\n<\/div>\n<\/div>\n\n\n\n
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Trying<\/div><\/div>\n<\/div>\n\n\n\n
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—<\/div><\/div>\n<\/div>\n\n\n\n
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Processando requisi\u00e7\u00e3o<\/div><\/div>\n<\/div>\n\n\n\n
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Fluxo de chamada \/ pr\u00f3ximo salto<\/div><\/div>\n<\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n
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180<\/a><\/div>\n<\/div>\n<\/div>\n\n\n\n
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Ringing<\/div><\/div>\n<\/div>\n\n\n\n
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—<\/div><\/div>\n<\/div>\n\n\n\n
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Destino alertando<\/div><\/div>\n<\/div>\n\n\n\n
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Sinaliza\u00e7\u00e3o \/ destino<\/div><\/div>\n<\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n
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183<\/a><\/div>\n<\/div>\n<\/div>\n\n\n\n
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Session progress<\/div><\/div>\n<\/div>\n\n\n\n
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—<\/div><\/div>\n<\/div>\n\n\n\n
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Progresso da sess\u00e3o<\/div><\/div>\n<\/div>\n\n\n\n
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SDP \/ early media<\/div><\/div>\n<\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n
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200<\/a><\/div>\n<\/div>\n<\/div>\n\n\n\n
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Ok<\/div><\/div>\n<\/div>\n\n\n\n
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—<\/div><\/div>\n<\/div>\n\n\n\n
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Chamada estabelecida<\/div><\/div>\n<\/div>\n\n\n\n
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Fluxo da chamada<\/div><\/div>\n<\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n
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301<\/a><\/div>\n<\/div>\n<\/div>\n\n\n\n
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Moved permanently<\/div><\/div>\n<\/div>\n\n\n\n
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1, 22<\/div><\/div>\n<\/div>\n\n\n\n
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Redirecionamento \/ n\u00famero alterado<\/div><\/div>\n<\/div>\n\n\n\n
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Contact \/ roteamento<\/div><\/div>\n<\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n
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400<\/a><\/div>\n<\/div>\n<\/div>\n\n\n\n
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Bad request<\/div><\/div>\n<\/div>\n\n\n\n
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28, 41<\/div><\/div>\n<\/div>\n\n\n\n
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Mensagem inv\u00e1lida \/ formato<\/div><\/div>\n<\/div>\n\n\n\n
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SIP \/ cabe\u00e7alhos<\/div><\/div>\n<\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n
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401<\/a><\/div>\n<\/div>\n<\/div>\n\n\n\n
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Unuauthorized<\/div><\/div>\n<\/div>\n\n\n\n
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21<\/div><\/div>\n<\/div>\n\n\n\n
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Autentica\u00e7\u00e3o necess\u00e1ria<\/div><\/div>\n<\/div>\n\n\n\n
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Autentica\u00e7\u00e3o \/ credenciais<\/div><\/div>\n<\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n
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403<\/a><\/div>\n<\/div>\n<\/div>\n\n\n\n
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Forbidden <\/div><\/div>\n<\/div>\n\n\n\n
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21<\/div><\/div>\n<\/div>\n\n\n\n
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Requisi\u00e7\u00e3o recusada<\/div><\/div>\n<\/div>\n\n\n\n
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Pol\u00edtica \/ autoriza\u00e7\u00e3o<\/div><\/div>\n<\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n
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404<\/a><\/div>\n<\/div>\n<\/div>\n\n\n\n
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Not found<\/div><\/div>\n<\/div>\n\n\n\n
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1, 22<\/div><\/div>\n<\/div>\n\n\n\n
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Destino n\u00e3o encontrado<\/div><\/div>\n<\/div>\n\n\n\n
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Roteamento \/ DNS<\/div><\/div>\n<\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n
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480<\/a><\/div>\n<\/div>\n<\/div>\n\n\n\n
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Temporarily Unavailable<\/div><\/div>\n<\/div>\n\n\n\n
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34, 41<\/div><\/div>\n<\/div>\n\n\n\n
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Destino indispon\u00edvel<\/div><\/div>\n<\/div>\n\n\n\n
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Registro \/ estado do destino<\/div><\/div>\n<\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n
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486<\/a><\/div>\n<\/div>\n<\/div>\n\n\n\n
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Busy here<\/div><\/div>\n<\/div>\n\n\n\n
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17<\/div><\/div>\n<\/div>\n\n\n\n
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Destino ocupado<\/div><\/div>\n<\/div>\n\n\n\n
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Terminal \/ linha<\/div><\/div>\n<\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n
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500<\/a><\/div>\n<\/div>\n<\/div>\n\n\n\n
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Server internal error<\/div><\/div>\n<\/div>\n\n\n\n
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41, 47<\/div><\/div>\n<\/div>\n\n\n\n
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Erro interno do servidor<\/div><\/div>\n<\/div>\n\n\n\n
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Equipamento \/ software<\/div><\/div>\n<\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n
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503<\/a><\/div>\n<\/div>\n<\/div>\n\n\n\n
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Service unavailable<\/div><\/div>\n<\/div>\n\n\n\n
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34, 38, 41<\/div><\/div>\n<\/div>\n\n\n\n
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Servi\u00e7o indispon\u00edvel <\/div><\/div>\n<\/div>\n\n\n\n
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SBC \/ getway \/ interconex\u00e3o<\/div><\/div>\n<\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n
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504<\/a><\/div>\n<\/div>\n<\/div>\n\n\n\n
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Server time-out <\/div><\/div>\n<\/div>\n\n\n\n
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41, 47 <\/div><\/div>\n<\/div>\n\n\n\n
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Time-out do servidor<\/div><\/div>\n<\/div>\n\n\n\n
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Rota \/ pr\u00f3ximo salto<\/div><\/div>\n<\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n
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603<\/a><\/div>\n<\/div>\n<\/div>\n\n\n\n
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Decline<\/div><\/div>\n<\/div>\n\n\n\n
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21<\/div><\/div>\n<\/div>\n\n\n\n
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Destino recusou<\/div><\/div>\n<\/div>\n\n\n\n
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Pol\u00edtica \/ terminal<\/div><\/div>\n<\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n
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Como investigar<\/h3><\/div><\/div>

Siga essse passo a passo para identificar a origem da falha<\/p><\/div><\/div>\n<\/div>\n\n\n\n

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Identifique onde surgiu<\/h3><\/div><\/div>

Verifique no call flow e nos registros qual elemento gerou a falha<\/p><\/div><\/div>\n<\/div>\n\n\n\n

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Veja o cause code<\/h3><\/div><\/div>

Consulte a tabela para entender o significado do c\u00f3digo<\/p><\/div><\/div>\n<\/div>\n\n\n\n

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Confira a localiza\u00e7\u00e3o<\/h3><\/div><\/div>

Identifique o ponto da rede onde a causa foi registrada<\/p><\/div><\/div>\n<\/div>\n\n\n\n

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Compare com SIP \/ ISUP<\/h3><\/div><\/div>

Correlacione com mensagens SIP \/ ISUP e o cen\u00e1rio da chamada<\/p><\/div><\/div>\n<\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n

<\/p>\n","protected":false},"excerpt":{"rendered":"

C\u00f3digo SIP Mensagem SIP Poss\u00edveis causas REL Cen\u00e1rios comuns Onde investigar Trying — Processando requisi\u00e7\u00e3o Fluxo de chamada \/ pr\u00f3ximo salto Ringing — Destino alertando Sinaliza\u00e7\u00e3o \/ destino Session progress — Progresso da sess\u00e3o SDP \/ early media Ok — Chamada estabelecida Fluxo da chamada Moved permanently 1, 22 Redirecionamento \/ n\u00famero alterado Contact \/ […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_uag_custom_page_level_css":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"disabled","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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Contact \/…","_links":{"self":[{"href":"https:\/\/orlandoneto.com\/index.php\/wp-json\/wp\/v2\/pages\/497","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/orlandoneto.com\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/orlandoneto.com\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/orlandoneto.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/orlandoneto.com\/index.php\/wp-json\/wp\/v2\/comments?post=497"}],"version-history":[{"count":6,"href":"https:\/\/orlandoneto.com\/index.php\/wp-json\/wp\/v2\/pages\/497\/revisions"}],"predecessor-version":[{"id":508,"href":"https:\/\/orlandoneto.com\/index.php\/wp-json\/wp\/v2\/pages\/497\/revisions\/508"}],"wp:attachment":[{"href":"https:\/\/orlandoneto.com\/index.php\/wp-json\/wp\/v2\/media?parent=497"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}