diff --git a/TODO.md b/TODO.md
index f6637a3..db6042f 100644
--- a/TODO.md
+++ b/TODO.md
@@ -2636,6 +2636,54 @@ do usuário: "o widget não conecta mais fica só cinza")
       em 4 execuções seguidas) e o status evolui
       `connecting → connected` sem nunca voltar pra cinza.
 
+## PHASE 73 — Editar ramal (nome/caller ID/contexto/codecs/grupo) no
+mesmo lugar da senha (pedido do usuário: "quando clicar no ramal pra
+editar a senha ou ver a senha atual já abra pra alterar o nome, o
+callerid, contexto, a lista de codec disponível e grupo de captura com
+uma lista dos que já foram criados, e um botão de salvar")
+- [x] `UpdateExtensionDto` só aceitava `callerIdName`/`callerIdNumber`/
+      `maxRegistrations`/`callGroup` — `name`, `context` e `codecs`
+      existiam no schema (`codecs` com default `"PCMU,PCMA,OPUS"`) mas
+      não tinham caminho de update nenhum. Adicionados os três, `codecs`
+      validado contra a lista fixa `AVAILABLE_CODECS` (PCMU/PCMA/OPUS/
+      G722/G729/GSM, mesma constante espelhada no frontend).
+- [x] **Achado real construindo isto**: a coluna `codecs` nunca tinha
+      sido ligada em nada — `buildDirectoryUserXml` (directory XML que o
+      FreeSWITCH consulta via mod_xml_curl) não emitia variável nenhuma
+      pra ela, então mudar o campo não teria efeito real nenhum na
+      negociação SDP do ramal. Adicionada a variável `absolute_codec_string`
+      (nome padrão do FreeSWITCH pra restringir/ordenar os codecs de um
+      usuário específico) em `packages/telephony/src/directory-xml.ts`,
+      e `apps/freeswitch-config/src/main.ts` passa `extension.codecs`
+      pra ela — agora o campo realmente controla o que o FreeSWITCH
+      oferece nesse ramal, não só um valor decorativo no banco.
+- [x] Frontend: painel único "Configuração e senha SIP" em
+      `ramais/[id]/page.tsx` — a antiga `dl` só-leitura virou um
+      formulário (`ExtensionEditForm` em `actions-panel.tsx`) com nome,
+      caller ID (nome+número), contexto, checkboxes dos codecs
+      disponíveis e grupo de captura, tudo num "Editar configuração" +
+      Salvar, bem ao lado de "Ver senha atual"/"Redefinir senha" (mesmo
+      painel, não mais escondido em telas separadas). Grupo de captura
+      usa um `<input list>` com `<datalist>` alimentado pelos grupos já
+      cadastrados nos OUTROS ramais do tenant (busca `GET /extensions`
+      na própria server component da página) — escolhe um já existente
+      ou digita um novo, sem re-digitar do zero. Substituiu o antigo
+      `CallGroupEditAction` (isolado, só esse campo).
+- [x] `callerIdName`/`callerIdNumber` agora aceitam `null` explícito pra
+      limpar o valor (antes só dava pra trocar por outro texto, nunca
+      voltar a vazio, porque o form mandava `undefined` — que o backend
+      trata como "não mudar nada" — em vez de `null`). Mesmo padrão que
+      `callGroup` já usava.
+- [x] Testado ponta a ponta com Playwright: tenant descartável com dois
+      ramais, um com grupo de captura "vendas"; abriu o segundo ramal,
+      "Editar configuração" mostrou "vendas" na lista suspensa (vindo do
+      OUTRO ramal), editou nome/caller ID/contexto, desmarcou OPUS —
+      salvou e a tela voltou mostrando exatamente os valores novos
+      (`codecs: "PCMU,PCMA"`, grupo "vendas" reaproveitado). Precisou
+      `systemctl restart b2bcall-api.service` pra pegar o DTO novo —
+      `apps/api` roda `tsc` uma vez no start (não é watch mode), então
+      mudança de `src/` só entra em produção depois do restart.
+
 ---
 
 ## Riscos conhecidos
diff --git a/apps/api/src/extensions/dto/create-extension.dto.ts b/apps/api/src/extensions/dto/create-extension.dto.ts
index e777ab3..d714d01 100644
--- a/apps/api/src/extensions/dto/create-extension.dto.ts
+++ b/apps/api/src/extensions/dto/create-extension.dto.ts
@@ -1,5 +1,13 @@
 import { IsIn, IsInt, IsOptional, IsString, Matches, Max, Min, MaxLength } from "class-validator";
 
+/** Codecs de áudio suportados pelo perfil Sofia `internal` (mesma lista
+ * usada em `packages/telephony/src/directory-xml.ts::absolute_codec_string`
+ * — manter as duas em sincronia). */
+export const AVAILABLE_CODECS = ["PCMU", "PCMA", "OPUS", "G722", "G729", "GSM"] as const;
+
+const CODEC_ALTERNATION = AVAILABLE_CODECS.join("|");
+const CODECS_REGEX = new RegExp(`^(${CODEC_ALTERNATION})(,(${CODEC_ALTERNATION}))*$`);
+
 export class CreateExtensionDto {
   @IsString()
   @Matches(/^[0-9]{2,10}$/, { message: "number deve ter só dígitos (2 a 10)" })
@@ -45,6 +53,11 @@ export class CreateExtensionDto {
 }
 
 export class UpdateExtensionDto {
+  @IsOptional()
+  @IsString()
+  @MaxLength(120)
+  name?: string;
+
   @IsOptional()
   @IsString()
   @MaxLength(80)
@@ -55,6 +68,16 @@ export class UpdateExtensionDto {
   @Matches(/^[0-9]{2,20}$/)
   callerIdNumber?: string;
 
+  @IsOptional()
+  @IsString()
+  @MaxLength(80)
+  context?: string;
+
+  @IsOptional()
+  @IsString()
+  @Matches(CODECS_REGEX, { message: `codecs deve ser uma lista separada por vírgula entre: ${AVAILABLE_CODECS.join(", ")}` })
+  codecs?: string;
+
   @IsOptional()
   @IsInt()
   @Min(1)
diff --git a/apps/api/src/extensions/extensions.controller.ts b/apps/api/src/extensions/extensions.controller.ts
index ca2d711..5f15775 100644
--- a/apps/api/src/extensions/extensions.controller.ts
+++ b/apps/api/src/extensions/extensions.controller.ts
@@ -209,8 +209,11 @@ export class ExtensionsController {
       tx.extension.updateMany({
         where: { id, tenantId, deletedAt: null },
         data: {
+          ...(dto.name !== undefined ? { name: dto.name } : {}),
           ...(dto.callerIdName !== undefined ? { callerIdName: dto.callerIdName } : {}),
           ...(dto.callerIdNumber !== undefined ? { callerIdNumber: dto.callerIdNumber } : {}),
+          ...(dto.context !== undefined ? { context: dto.context } : {}),
+          ...(dto.codecs !== undefined ? { codecs: dto.codecs } : {}),
           ...(dto.maxRegistrations !== undefined ? { maxRegistrations: dto.maxRegistrations } : {}),
           ...(dto.callGroup !== undefined ? { callGroup: dto.callGroup } : {}),
         },
diff --git a/apps/freeswitch-config/src/main.ts b/apps/freeswitch-config/src/main.ts
index c295cda..48bd355 100644
--- a/apps/freeswitch-config/src/main.ts
+++ b/apps/freeswitch-config/src/main.ts
@@ -78,6 +78,7 @@ async function resolveDirectoryXml(user: string | undefined, domain: string | un
     tenantId: extension.tenantId,
     extensionId: extension.id,
     callGroup: extension.callGroup,
+    codecs: extension.codecs,
   });
 }
 
diff --git a/apps/frontend/src/app/app/telefonia/ramais/[id]/actions-panel.tsx b/apps/frontend/src/app/app/telefonia/ramais/[id]/actions-panel.tsx
index ab62cbb..ed5b0c3 100644
--- a/apps/frontend/src/app/app/telefonia/ramais/[id]/actions-panel.tsx
+++ b/apps/frontend/src/app/app/telefonia/ramais/[id]/actions-panel.tsx
@@ -2,12 +2,198 @@
 
 import { useState, useTransition } from "react";
 import { useRouter } from "next/navigation";
-import { Eye, KeyRound, Trash2 } from "lucide-react";
+import { Eye, KeyRound, Pencil, Trash2 } from "lucide-react";
 import { Button } from "@/components/ui/button";
-import { Input } from "@/components/ui/input";
+import { Input, FieldLabel } from "@/components/ui/input";
 import { SecretReveal } from "@/components/ui/secret-reveal";
+import { AVAILABLE_CODECS, type Extension } from "@/lib/extension-types";
 import { resetExtensionPassword, revealExtensionPassword, deleteExtension, updateExtension } from "../actions";
 
+/** Formulário único de edição (nome, caller ID, contexto, codecs, grupo
+ * de captura) — pedido do usuário: "quando clicar no ramal para editar a
+ * senha ou ver a senha atual já abra pra alterar" o resto da configuração
+ * junto, num só lugar com um botão de salvar. */
+export function ExtensionEditForm({ extension, existingCallGroups }: { extension: Extension; existingCallGroups: string[] }) {
+  const router = useRouter();
+  const [editing, setEditing] = useState(false);
+  const [name, setName] = useState(extension.name);
+  const [callerIdName, setCallerIdName] = useState(extension.callerIdName ?? "");
+  const [callerIdNumber, setCallerIdNumber] = useState(extension.callerIdNumber ?? "");
+  const [context, setContext] = useState(extension.context);
+  const [codecs, setCodecs] = useState<string[]>(extension.codecs.split(",").map((c) => c.trim()).filter(Boolean));
+  const [callGroup, setCallGroup] = useState(extension.callGroup ?? "");
+  const [pending, startTransition] = useTransition();
+  const [error, setError] = useState<string | null>(null);
+
+  function toggleCodec(codec: string) {
+    setCodecs((prev) => (prev.includes(codec) ? prev.filter((c) => c !== codec) : [...prev, codec]));
+  }
+
+  function onSave() {
+    setError(null);
+    if (!name.trim()) {
+      setError("Dê um nome ao ramal.");
+      return;
+    }
+    if (codecs.length === 0) {
+      setError("Selecione ao menos um codec.");
+      return;
+    }
+    startTransition(async () => {
+      const result = await updateExtension(extension.id, {
+        name: name.trim(),
+        callerIdName: callerIdName.trim() || null,
+        callerIdNumber: callerIdNumber.trim() || null,
+        context: context.trim() || undefined,
+        codecs: codecs.join(","),
+        callGroup: callGroup.trim() || null,
+      });
+      if (!result.ok) {
+        setError(result.error);
+        return;
+      }
+      setEditing(false);
+      router.refresh();
+    });
+  }
+
+  function onCancel() {
+    setName(extension.name);
+    setCallerIdName(extension.callerIdName ?? "");
+    setCallerIdNumber(extension.callerIdNumber ?? "");
+    setContext(extension.context);
+    setCodecs(extension.codecs.split(",").map((c) => c.trim()).filter(Boolean));
+    setCallGroup(extension.callGroup ?? "");
+    setError(null);
+    setEditing(false);
+  }
+
+  if (!editing) {
+    return (
+      <dl className="grid grid-cols-1 gap-x-6 gap-y-4 sm:grid-cols-2">
+        <div>
+          <dt className="text-xs font-medium uppercase tracking-wide text-muted-foreground">Nome</dt>
+          <dd className="mt-1 text-sm text-foreground">{extension.name}</dd>
+        </div>
+        <div>
+          <dt className="text-xs font-medium uppercase tracking-wide text-muted-foreground">Caller ID</dt>
+          <dd className="mt-1 text-sm text-foreground">
+            {extension.callerIdName || extension.callerIdNumber
+              ? `${extension.callerIdName ?? ""} ${extension.callerIdNumber ? `<${extension.callerIdNumber}>` : ""}`.trim()
+              : "—"}
+          </dd>
+        </div>
+        <div>
+          <dt className="text-xs font-medium uppercase tracking-wide text-muted-foreground">Contexto</dt>
+          <dd className="mt-1 font-mono text-sm text-foreground">{extension.context}</dd>
+        </div>
+        <div>
+          <dt className="text-xs font-medium uppercase tracking-wide text-muted-foreground">Perfil Sofia</dt>
+          <dd className="mt-1 font-mono text-sm text-foreground">{extension.sofiaProfile}</dd>
+        </div>
+        <div>
+          <dt className="text-xs font-medium uppercase tracking-wide text-muted-foreground">Codecs</dt>
+          <dd className="mt-1 font-mono text-sm text-foreground">{extension.codecs}</dd>
+        </div>
+        <div>
+          <dt className="text-xs font-medium uppercase tracking-wide text-muted-foreground">Grupo de captura</dt>
+          <dd className="mt-1 text-sm text-foreground">{extension.callGroup ?? "— (nenhum)"}</dd>
+        </div>
+        <div className="sm:col-span-2">
+          <Button type="button" variant="outline" size="sm" onClick={() => setEditing(true)}>
+            <Pencil className="h-4 w-4" aria-hidden />
+            Editar configuração
+          </Button>
+        </div>
+      </dl>
+    );
+  }
+
+  return (
+    <div className="space-y-4">
+      <div className="grid grid-cols-1 gap-4 sm:grid-cols-2">
+        <div>
+          <FieldLabel htmlFor="ext-edit-name">Nome</FieldLabel>
+          <Input id="ext-edit-name" value={name} onChange={(e) => setName(e.target.value)} disabled={pending} />
+        </div>
+        <div>
+          <FieldLabel htmlFor="ext-edit-context">Contexto</FieldLabel>
+          <Input id="ext-edit-context" value={context} onChange={(e) => setContext(e.target.value)} className="font-mono" disabled={pending} />
+        </div>
+        <div>
+          <FieldLabel htmlFor="ext-edit-cid-name">Caller ID — nome</FieldLabel>
+          <Input id="ext-edit-cid-name" value={callerIdName} onChange={(e) => setCallerIdName(e.target.value)} disabled={pending} />
+        </div>
+        <div>
+          <FieldLabel htmlFor="ext-edit-cid-number">Caller ID — número</FieldLabel>
+          <Input
+            id="ext-edit-cid-number"
+            value={callerIdNumber}
+            onChange={(e) => setCallerIdNumber(e.target.value.replace(/[^0-9]/g, ""))}
+            className="font-mono"
+            disabled={pending}
+          />
+        </div>
+      </div>
+
+      <div>
+        <FieldLabel>Codecs disponíveis</FieldLabel>
+        <div className="flex flex-wrap gap-x-4 gap-y-2">
+          {AVAILABLE_CODECS.map((codec) => (
+            <label key={codec} className="flex items-center gap-1.5 text-sm text-foreground">
+              <input
+                type="checkbox"
+                checked={codecs.includes(codec)}
+                onChange={() => toggleCodec(codec)}
+                disabled={pending}
+                className="h-4 w-4 rounded border-input"
+              />
+              <span className="font-mono">{codec}</span>
+            </label>
+          ))}
+        </div>
+      </div>
+
+      <div className="sm:w-72">
+        <FieldLabel htmlFor="ext-edit-callgroup">Grupo de captura</FieldLabel>
+        <Input
+          id="ext-edit-callgroup"
+          list="ext-edit-callgroups"
+          value={callGroup}
+          onChange={(e) => setCallGroup(e.target.value)}
+          placeholder="Sem grupo"
+          className="font-mono"
+          disabled={pending}
+        />
+        <datalist id="ext-edit-callgroups">
+          {existingCallGroups.map((group) => (
+            <option key={group} value={group} />
+          ))}
+        </datalist>
+        <p className="mt-1.5 text-xs text-muted-foreground">
+          Escolha um grupo já existente na lista ou digite um novo. Ramais no mesmo grupo podem capturar a chamada um
+          do outro (*8).
+        </p>
+      </div>
+
+      {error && (
+        <p role="alert" className="rounded-md border border-destructive/30 bg-destructive/10 px-3 py-2 text-sm text-destructive">
+          {error}
+        </p>
+      )}
+
+      <div className="flex gap-3">
+        <Button type="button" onClick={onSave} disabled={pending}>
+          {pending ? "Salvando…" : "Salvar"}
+        </Button>
+        <Button type="button" variant="ghost" onClick={onCancel} disabled={pending}>
+          Cancelar
+        </Button>
+      </div>
+    </div>
+  );
+}
+
 /** Diferente de `ResetPasswordAction`: nunca troca a senha, só mostra a
  * atual de novo — pra reconfigurar um telefone/softphone sem invalidar
  * outro aparelho já usando a mesma credencial (achado real reportado pelo
@@ -48,51 +234,6 @@ export function RevealPasswordAction({ extensionId }: { extensionId: string }) {
   );
 }
 
-export function CallGroupEditAction({ extensionId, callGroup }: { extensionId: string; callGroup: string | null }) {
-  const router = useRouter();
-  const [editing, setEditing] = useState(false);
-  const [value, setValue] = useState(callGroup ?? "");
-  const [pending, startTransition] = useTransition();
-  const [error, setError] = useState<string | null>(null);
-
-  function onSave() {
-    setError(null);
-    startTransition(async () => {
-      const result = await updateExtension(extensionId, { callGroup: value.trim() || null });
-      if (!result.ok) {
-        setError(result.error);
-        return;
-      }
-      setEditing(false);
-      router.refresh();
-    });
-  }
-
-  if (!editing) {
-    return (
-      <div className="flex items-center gap-3">
-        <span className="font-mono text-sm text-foreground">{callGroup ?? "— (nenhum)"}</span>
-        <Button type="button" variant="ghost" size="sm" onClick={() => setEditing(true)}>
-          Editar
-        </Button>
-      </div>
-    );
-  }
-
-  return (
-    <div className="flex items-center gap-2">
-      <Input value={value} onChange={(e) => setValue(e.target.value)} placeholder="Ex.: recepcao" className="h-8 w-48 font-mono" disabled={pending} />
-      <Button type="button" size="sm" onClick={onSave} disabled={pending}>
-        {pending ? "…" : "Salvar"}
-      </Button>
-      <Button type="button" variant="ghost" size="sm" onClick={() => setEditing(false)} disabled={pending}>
-        Cancelar
-      </Button>
-      {error && <span className="text-xs text-destructive">{error}</span>}
-    </div>
-  );
-}
-
 export function ResetPasswordAction({ extensionId }: { extensionId: string }) {
   const [pending, startTransition] = useTransition();
   const [error, setError] = useState<string | null>(null);
diff --git a/apps/frontend/src/app/app/telefonia/ramais/[id]/page.tsx b/apps/frontend/src/app/app/telefonia/ramais/[id]/page.tsx
index a545434..2da9d58 100644
--- a/apps/frontend/src/app/app/telefonia/ramais/[id]/page.tsx
+++ b/apps/frontend/src/app/app/telefonia/ramais/[id]/page.tsx
@@ -7,7 +7,7 @@ import { Panel, PanelHeader } from "@/components/ui/panel";
 import { Pill } from "@/components/ui/pill";
 import { formatDate } from "@/lib/format";
 import type { Extension } from "@/lib/extension-types";
-import { ResetPasswordAction, RevealPasswordAction, CallGroupEditAction, DeleteExtensionAction } from "./actions-panel";
+import { ResetPasswordAction, RevealPasswordAction, ExtensionEditForm, DeleteExtensionAction } from "./actions-panel";
 
 interface Me {
   tenant: { name: string; code: string } | null;
@@ -25,6 +25,8 @@ export default async function ExtensionDetailPage({ params }: { params: Promise<
     throw err;
   }
   const me = await apiFetch<Me>("/auth/me", session.accessToken);
+  const allExtensions = await apiFetch<Extension[]>("/extensions", session.accessToken);
+  const existingCallGroups = [...new Set(allExtensions.map((e) => e.callGroup).filter((g): g is string => !!g))].sort();
 
   return (
     <div className="mx-auto max-w-2xl space-y-5">
@@ -46,54 +48,25 @@ export default async function ExtensionDetailPage({ params }: { params: Promise<
         <span className="font-mono">{extension.domain}</span>
       </p>
 
-      <Panel>
-        <PanelHeader title="Configuração" />
-        <dl className="grid grid-cols-1 gap-x-6 gap-y-4 p-5 sm:grid-cols-2">
-          <div>
-            <dt className="text-xs font-medium uppercase tracking-wide text-muted-foreground">Caller ID</dt>
-            <dd className="mt-1 text-sm text-foreground">
-              {extension.callerIdName || extension.callerIdNumber
-                ? `${extension.callerIdName ?? ""} ${extension.callerIdNumber ? `<${extension.callerIdNumber}>` : ""}`.trim()
-                : "—"}
-            </dd>
-          </div>
-          <div>
-            <dt className="text-xs font-medium uppercase tracking-wide text-muted-foreground">Contexto</dt>
-            <dd className="mt-1 font-mono text-sm text-foreground">{extension.context}</dd>
-          </div>
-          <div>
-            <dt className="text-xs font-medium uppercase tracking-wide text-muted-foreground">Perfil Sofia</dt>
-            <dd className="mt-1 font-mono text-sm text-foreground">{extension.sofiaProfile}</dd>
-          </div>
-          <div>
-            <dt className="text-xs font-medium uppercase tracking-wide text-muted-foreground">Codecs</dt>
-            <dd className="mt-1 font-mono text-sm text-foreground">{extension.codecs}</dd>
-          </div>
-          <div>
-            <dt className="text-xs font-medium uppercase tracking-wide text-muted-foreground">Registros simultâneos</dt>
-            <dd className="mt-1 font-mono text-sm tabular-nums text-foreground">{extension.maxRegistrations}</dd>
-          </div>
-          <div>
-            <dt className="text-xs font-medium uppercase tracking-wide text-muted-foreground">Grupo de captura</dt>
-            <dd className="mt-1 text-sm text-foreground">
-              <CallGroupEditAction extensionId={extension.id} callGroup={extension.callGroup} />
-            </dd>
-          </div>
-          <div>
-            <dt className="text-xs font-medium uppercase tracking-wide text-muted-foreground">Criado em</dt>
-            <dd className="mt-1 text-sm text-foreground">{formatDate(extension.createdAt)}</dd>
-          </div>
-        </dl>
-      </Panel>
-
       <Panel>
         <PanelHeader
-          title="Senha SIP"
-          description="Cifrada em repouso — dá pra ver a atual de novo (pra reconfigurar um aparelho) ou gerar uma nova."
+          title="Configuração e senha SIP"
+          description="Edite os dados do ramal e veja/redefina a senha SIP no mesmo lugar."
         />
-        <div className="space-y-4 p-5">
-          <RevealPasswordAction extensionId={extension.id} />
-          <ResetPasswordAction extensionId={extension.id} />
+        <div className="space-y-5 p-5">
+          <ExtensionEditForm extension={extension} existingCallGroups={existingCallGroups} />
+          <div className="flex flex-wrap gap-x-6 gap-y-1 border-t border-border pt-4 text-xs text-muted-foreground">
+            <span>
+              Registros simultâneos: <span className="font-mono tabular-nums text-foreground">{extension.maxRegistrations}</span>
+            </span>
+            <span>Criado em {formatDate(extension.createdAt)}</span>
+          </div>
+          <div className="border-t border-border pt-4">
+            <div className="space-y-4">
+              <RevealPasswordAction extensionId={extension.id} />
+              <ResetPasswordAction extensionId={extension.id} />
+            </div>
+          </div>
         </div>
       </Panel>
 
diff --git a/apps/frontend/src/app/app/telefonia/ramais/actions.ts b/apps/frontend/src/app/app/telefonia/ramais/actions.ts
index 89a4ef9..1e22e76 100644
--- a/apps/frontend/src/app/app/telefonia/ramais/actions.ts
+++ b/apps/frontend/src/app/app/telefonia/ramais/actions.ts
@@ -74,8 +74,11 @@ export async function revealExtensionPassword(id: string): Promise<{ ok: true; s
 }
 
 export interface UpdateExtensionInput {
-  callerIdName?: string;
-  callerIdNumber?: string;
+  name?: string;
+  callerIdName?: string | null;
+  callerIdNumber?: string | null;
+  context?: string;
+  codecs?: string;
   maxRegistrations?: number;
   callGroup?: string | null;
 }
diff --git a/apps/frontend/src/lib/extension-types.ts b/apps/frontend/src/lib/extension-types.ts
index 7bc630f..19cb073 100644
--- a/apps/frontend/src/lib/extension-types.ts
+++ b/apps/frontend/src/lib/extension-types.ts
@@ -1,3 +1,6 @@
+/** Mesma lista de `apps/api/src/extensions/dto/create-extension.dto.ts::AVAILABLE_CODECS` — manter em sincronia. */
+export const AVAILABLE_CODECS = ["PCMU", "PCMA", "OPUS", "G722", "G729", "GSM"] as const;
+
 export interface Extension {
   id: string;
   tenantId: string;
diff --git a/packages/telephony/src/directory-xml.ts b/packages/telephony/src/directory-xml.ts
index 36f20b3..32cef7c 100644
--- a/packages/telephony/src/directory-xml.ts
+++ b/packages/telephony/src/directory-xml.ts
@@ -30,6 +30,11 @@ export interface DirectoryUserParams {
    * contra a documentação do FreeSWITCH antes de close (a primeira versão
    * usava `call-group`, que não é lido por nada). */
   callGroup?: string | null;
+  /** Lista de codecs de áudio permitidos pro ramal, separados por vírgula
+   * (ex.: "PCMU,PCMA,OPUS") — vira `absolute_codec_string`, a variável
+   * que o FreeSWITCH usa pra restringir/ordenar os codecs oferecidos na
+   * negociação SDP pra este usuário especificamente. */
+  codecs?: string;
 }
 
 /**
@@ -67,6 +72,7 @@ export function buildDirectoryUserXml(params: DirectoryUserParams): string {
                 <variable name="b2bcall_tenant_id" value="${xmlEscape(params.tenantId)}"/>
                 <variable name="b2bcall_extension_id" value="${xmlEscape(params.extensionId)}"/>
                 ${params.callGroup ? `<variable name="callgroup" value="${xmlEscape(params.callGroup)}"/>` : ""}
+                ${params.codecs ? `<variable name="absolute_codec_string" value="${xmlEscape(params.codecs)}"/>` : ""}
               </variables>
             </user>
           </users>