feat: add vici dial controls from UI (#563)

* ViciDial Working

* feat(telephony): add FreeSWITCH provider to upstream-PBX seam

Generalize the upstream-PBX capture and control paths to dispatch by
provider. FreeSWITCH bridges in with X-PBX-* headers and is driven over
the Event Socket Library (uuid_kill / uuid_transfer) by the channel UUID,
alongside the existing VICIdial ra_call_control path.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

* add vici specific configs

* feat(telephony): env-based VICIdial config + address3 post-call routing

Move VICIdial agent/non-agent API and FreeSWITCH ESL connection settings
out of hardcoded POC values into environment variables so the same image
works against a PBX on another server.

Add VICIdial update_lead forwarding: X-VICI-UPDATE-LEAD_* extracted
variables are mapped to lead columns and pushed via the non-agent API
before a transfer, with reserved API-control params dropped.

Add hardcoded address3 disposition routing (Y/N -> in-group transfer,
else hang up) and a synchronous final variable extraction so the
transfer path sees the freshest conversation state. Skip upstream_pbx
capture on non-PJSIP channels to avoid Asterisk 500s.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

* chore: run formatter

* feat: make vici configurable from UI

* chore: clean up PR

* fix: incorporate review comments

* chore: incorporate review comments

* chore: generate client

* chore: incporporate review comments

* chore: incorporate review comments

---------

Co-authored-by: Dograh POC <payment@dograh.com>
Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

api/services/telephony/providers/ari/__init__.py

@@ -4,8 +4,10 @@ from typing import Any, Dict
 
 from api.services.telephony.registry import (
     ProviderSpec,
+    ProviderUICondition,
     ProviderUIField,
     ProviderUIMetadata,
+    ProviderUIOption,
     register,
 )
 
@@ -20,6 +22,7 @@ def _config_loader(value: Dict[str, Any]) -> Dict[str, Any]:
         "ari_endpoint": value.get("ari_endpoint"),
         "app_name": value.get("app_name"),
         "app_password": value.get("app_password"),
+        "external_pbx": value.get("external_pbx"),
         "from_numbers": value.get("from_numbers", []),
     }
 
@@ -58,6 +61,92 @@ _UI_METADATA = ProviderUIMetadata(
             type="string-array",
             description="SIP extensions/numbers for outbound calls",
         ),
+        ProviderUIField(
+            name="external_pbx.type",
+            label="External PBX Type",
+            type="select",
+            required=False,
+            description=(
+                "Enable PBX-specific call control for calls patched into Dograh "
+                "through this Asterisk configuration."
+            ),
+            options=[ProviderUIOption(value="vicidial", label="VICIdial")],
+            section="External PBX",
+            feature_gate="external_pbx_integrations",
+        ),
+        ProviderUIField(
+            name="external_pbx.agent_api.url",
+            label="Agent API URL",
+            type="text",
+            description="Full VICIdial remote-agent API URL, ending in agc/api.php",
+            placeholder="https://vici.example.com/agc/api.php",
+            visible_when=ProviderUICondition(
+                field="external_pbx.type", equals="vicidial"
+            ),
+            section="External PBX",
+            feature_gate="external_pbx_integrations",
+        ),
+        ProviderUIField(
+            name="external_pbx.agent_api.username",
+            label="Agent API User",
+            type="text",
+            sensitive=True,
+            visible_when=ProviderUICondition(
+                field="external_pbx.type", equals="vicidial"
+            ),
+            section="External PBX",
+            feature_gate="external_pbx_integrations",
+        ),
+        ProviderUIField(
+            name="external_pbx.agent_api.password",
+            label="Agent API Password",
+            type="password",
+            sensitive=True,
+            visible_when=ProviderUICondition(
+                field="external_pbx.type", equals="vicidial"
+            ),
+            section="External PBX",
+            feature_gate="external_pbx_integrations",
+        ),
+        ProviderUIField(
+            name="external_pbx.non_agent_api.url",
+            label="Non-Agent API URL",
+            type="text",
+            required=False,
+            description=(
+                "Optional. Required only when a workflow updates VICIdial lead fields."
+            ),
+            placeholder="https://vici.example.com/vicidial/non_agent_api.php",
+            visible_when=ProviderUICondition(
+                field="external_pbx.type", equals="vicidial"
+            ),
+            section="External PBX",
+            feature_gate="external_pbx_integrations",
+        ),
+        ProviderUIField(
+            name="external_pbx.non_agent_api.username",
+            label="Non-Agent API User",
+            type="text",
+            required=False,
+            sensitive=True,
+            visible_when=ProviderUICondition(
+                field="external_pbx.type", equals="vicidial"
+            ),
+            section="External PBX",
+            feature_gate="external_pbx_integrations",
+        ),
+        ProviderUIField(
+            name="external_pbx.non_agent_api.password",
+            label="Non-Agent API Password",
+            type="password",
+            required=False,
+            sensitive=True,
+            visible_when=ProviderUICondition(
+                field="external_pbx.type", equals="vicidial"
+            ),
+            section="External PBX",
+            feature_gate="external_pbx_integrations",
+        ),
     ],
 )
 

api/services/telephony/providers/ari/config.py

@@ -1,8 +1,69 @@
 """ARI (Asterisk REST Interface) telephony configuration schemas."""
 
-from typing import List, Literal
+from typing import List, Literal, Optional
 
-from pydantic import BaseModel, Field
+from pydantic import BaseModel, Field, field_validator, model_validator
+
+
+class VicidialAgentAPIConfiguration(BaseModel):
+    """VICIdial remote-agent call-control API configuration."""
+
+    url: str = Field(..., min_length=1, description="Full URL to agc/api.php")
+    username: str = Field(..., min_length=1, description="VICIdial agent API user")
+    password: str = Field(..., min_length=1, description="VICIdial agent API password")
+    source: str = Field(default="dograh", description="VICIdial API source tag")
+
+    @field_validator("url")
+    @classmethod
+    def validate_http_url(cls, value: str) -> str:
+        stripped = value.strip()
+        if not stripped.startswith(("http://", "https://")):
+            raise ValueError("VICIdial agent API URL must use http:// or https://")
+        return stripped
+
+
+class VicidialNonAgentAPIConfiguration(BaseModel):
+    """Optional VICIdial non-agent API configuration for lead updates."""
+
+    url: Optional[str] = Field(default=None, description="Full non_agent_api.php URL")
+    username: Optional[str] = Field(default=None, description="Non-agent API user")
+    password: Optional[str] = Field(default=None, description="Non-agent API password")
+    source: str = Field(default="dograh", description="Non-agent API source tag")
+
+    @field_validator("url")
+    @classmethod
+    def validate_http_url(cls, value: Optional[str]) -> Optional[str]:
+        if value is None:
+            return None
+        stripped = value.strip()
+        if stripped and not stripped.startswith(("http://", "https://")):
+            raise ValueError("VICIdial non-agent API URL must use http:// or https://")
+        return stripped or None
+
+    @model_validator(mode="after")
+    def validate_complete_credentials(self):
+        supplied = [self.url, self.username, self.password]
+        if any(supplied) and not all(supplied):
+            raise ValueError(
+                "VICIdial non-agent API URL, username, and password must be "
+                "configured together"
+            )
+        return self
+
+
+class VicidialExternalPBXConfiguration(BaseModel):
+    """External-PBX configuration used by the VICIdial strategy adapter."""
+
+    type: Literal["vicidial"] = Field(default="vicidial")
+    agent_api: VicidialAgentAPIConfiguration
+    non_agent_api: Optional[VicidialNonAgentAPIConfiguration] = None
+    timeout_seconds: int = Field(default=8, ge=1, le=30)
+
+    @model_validator(mode="after")
+    def drop_empty_non_agent_configuration(self):
+        if self.non_agent_api is not None and not self.non_agent_api.url:
+            self.non_agent_api = None
+        return self
 
 
 class ARIConfigurationRequest(BaseModel):
@@ -20,6 +81,10 @@ class ARIConfigurationRequest(BaseModel):
         default="",
         description="websocket_client.conf connection name for externalMedia (e.g., dograh_staging)",
     )
+    external_pbx: Optional[VicidialExternalPBXConfiguration] = Field(
+        default=None,
+        description="Optional external PBX connected through this Asterisk instance",
+    )
     from_numbers: List[str] = Field(
         default_factory=list,
         description="List of SIP extensions/numbers for outbound calls (optional)",
@@ -34,4 +99,5 @@ class ARIConfigurationResponse(BaseModel):
     app_name: str
     app_password: str  # Masked
     ws_client_name: str = ""
+    external_pbx: Optional[VicidialExternalPBXConfiguration] = None
     from_numbers: List[str]

api/services/telephony/providers/ari/external_pbx/__init__.py

@@ -0,0 +1,14 @@
+"""External-PBX adapter entrypoint for the ARI provider."""
+
+from .base import ExternalPBXAdapter, ExternalPBXResult
+from .registry import create_adapter, register_adapter, registered_adapter_types
+from .vicidial import VicidialAdapter
+
+register_adapter("vicidial", VicidialAdapter)
+
+__all__ = [
+    "ExternalPBXAdapter",
+    "ExternalPBXResult",
+    "create_adapter",
+    "registered_adapter_types",
+]

api/services/telephony/providers/ari/external_pbx/base.py

@@ -0,0 +1,44 @@
+"""Contracts for PBXs that hand a customer leg to Dograh through Asterisk."""
+
+from __future__ import annotations
+
+from abc import ABC, abstractmethod
+from dataclasses import dataclass
+from typing import Awaitable, Callable, Mapping
+
+HeaderReader = Callable[[str], Awaitable[str]]
+
+
+@dataclass(frozen=True)
+class ExternalPBXResult:
+    ok: bool
+    action: str
+    message: str
+
+
+class ExternalPBXAdapter(ABC):
+    """PBX-specific operations; ARI continues to own only Dograh's local leg."""
+
+    type: str
+
+    @abstractmethod
+    async def capture_call_identity(
+        self, read_header: HeaderReader
+    ) -> dict[str, str] | None:
+        """Read a stable upstream-call identity from inbound SIP headers."""
+
+    @abstractmethod
+    async def hangup(self, identity: Mapping[str, str]) -> ExternalPBXResult:
+        """Hang up the customer leg owned by the external PBX."""
+
+    @abstractmethod
+    async def transfer(
+        self, identity: Mapping[str, str], destination: str
+    ) -> ExternalPBXResult:
+        """Transfer the customer leg to a PBX-native destination."""
+
+    @abstractmethod
+    async def update_fields(
+        self, identity: Mapping[str, str], fields: Mapping[str, str]
+    ) -> ExternalPBXResult:
+        """Update provider-native fields associated with the call."""

api/services/telephony/providers/ari/external_pbx/registry.py

@@ -0,0 +1,34 @@
+"""Registry for drop-in external-PBX adapters."""
+
+from __future__ import annotations
+
+from collections.abc import Callable
+from typing import Any
+
+from .base import ExternalPBXAdapter
+
+AdapterFactory = Callable[[dict[str, Any]], ExternalPBXAdapter]
+_FACTORIES: dict[str, AdapterFactory] = {}
+
+
+def register_adapter(pbx_type: str, factory: AdapterFactory) -> None:
+    normalized = pbx_type.strip().lower()
+    if not normalized:
+        raise ValueError("External PBX type cannot be empty")
+    if normalized in _FACTORIES:
+        raise ValueError(f"External PBX adapter already registered: {normalized}")
+    _FACTORIES[normalized] = factory
+
+
+def create_adapter(config: dict[str, Any] | None) -> ExternalPBXAdapter | None:
+    if not config:
+        return None
+    pbx_type = str(config.get("type", "")).strip().lower()
+    factory = _FACTORIES.get(pbx_type)
+    if factory is None:
+        raise ValueError(f"Unsupported external PBX type: {pbx_type or '<empty>'}")
+    return factory(config)
+
+
+def registered_adapter_types() -> tuple[str, ...]:
+    return tuple(sorted(_FACTORIES))

api/services/telephony/providers/ari/external_pbx/vicidial.py

@@ -0,0 +1,170 @@
+"""VICIdial implementation of external-PBX call and lead operations."""
+
+from __future__ import annotations
+
+import re
+from typing import Any, Mapping
+
+import aiohttp
+from loguru import logger
+
+from .base import ExternalPBXAdapter, ExternalPBXResult, HeaderReader
+
+_LEAD_FIELD_RE = re.compile(r"^[A-Za-z][A-Za-z0-9_]{0,63}$")
+_RESERVED_LEAD_FIELDS = frozenset({"source", "user", "pass", "function", "lead_id"})
+
+
+class VicidialAdapter(ExternalPBXAdapter):
+    type = "vicidial"
+
+    def __init__(self, config: dict[str, Any]):
+        agent_api = config.get("agent_api") or {}
+        non_agent_api = config.get("non_agent_api") or {}
+        self._agent_url = str(agent_api.get("url", "")).strip()
+        self._agent_user = str(agent_api.get("username", "")).strip()
+        self._agent_password = str(agent_api.get("password", ""))
+        self._agent_source = str(agent_api.get("source", "dograh")).strip()
+        self._non_agent_url = str(non_agent_api.get("url", "")).strip()
+        self._non_agent_user = str(non_agent_api.get("username", "")).strip()
+        self._non_agent_password = str(non_agent_api.get("password", ""))
+        self._non_agent_source = str(non_agent_api.get("source", "dograh")).strip()
+        self._timeout = aiohttp.ClientTimeout(
+            total=min(max(int(config.get("timeout_seconds", 8)), 1), 30)
+        )
+
+    async def capture_call_identity(
+        self, read_header: HeaderReader
+    ) -> dict[str, str] | None:
+        callerid = (await read_header("X-VICIDIAL-callerid")).strip()
+        if not callerid:
+            return None
+        return {
+            "type": self.type,
+            "callerid": callerid,
+            "agent_user": (await read_header("X-VICIDIAL-user")).strip(),
+            "lead_id": (await read_header("X-VICIDIAL-lead_id")).strip(),
+            "campaign_id": (await read_header("X-VICIDIAL-campaign_id")).strip(),
+            "ingroup_id": (await read_header("X-VICIDIAL-ingroup_id")).strip(),
+        }
+
+    async def _agent_call_control(
+        self, identity: Mapping[str, str], stage: str, **extra: str
+    ) -> ExternalPBXResult:
+        if not all([self._agent_url, self._agent_user, self._agent_password]):
+            return ExternalPBXResult(
+                False, stage.lower(), "Agent API is not configured"
+            )
+        if not identity.get("callerid") or not identity.get("agent_user"):
+            return ExternalPBXResult(
+                False, stage.lower(), "VICIdial call identity is incomplete"
+            )
+        params = {
+            "source": self._agent_source,
+            "user": self._agent_user,
+            "pass": self._agent_password,
+            "agent_user": identity["agent_user"],
+            "function": "ra_call_control",
+            "stage": stage,
+            "value": identity["callerid"],
+            **extra,
+        }
+        try:
+            async with aiohttp.ClientSession(timeout=self._timeout) as session:
+                async with session.get(self._agent_url, params=params) as response:
+                    response_text = (await response.text()).strip()
+                    ok = response.status == 200 and response_text.startswith("SUCCESS")
+            logger.info(
+                "[VICIdial] ra_call_control completed "
+                f"stage={stage} status={response.status} ok={ok}"
+            )
+            return ExternalPBXResult(
+                ok,
+                stage.lower(),
+                "VICIdial accepted the operation"
+                if ok
+                else "VICIdial rejected the operation",
+            )
+        except Exception as exc:
+            logger.error(f"[VICIdial] ra_call_control failed stage={stage}: {exc}")
+            return ExternalPBXResult(
+                False, stage.lower(), "VICIdial API request failed"
+            )
+
+    async def hangup(self, identity: Mapping[str, str]) -> ExternalPBXResult:
+        return await self._agent_call_control(identity, "HANGUP")
+
+    async def transfer(
+        self, identity: Mapping[str, str], destination: str
+    ) -> ExternalPBXResult:
+        choice = destination.strip()
+        if choice.lower() == "source":
+            choice = str(identity.get("ingroup_id", "")).strip()
+        if not choice:
+            return ExternalPBXResult(
+                False, "ingrouptransfer", "No VICIdial in-group was resolved"
+            )
+        return await self._agent_call_control(
+            identity, "INGROUPTRANSFER", ingroup_choices=choice
+        )
+
+    async def update_fields(
+        self, identity: Mapping[str, str], fields: Mapping[str, str]
+    ) -> ExternalPBXResult:
+        if not fields:
+            return ExternalPBXResult(True, "update_lead", "No lead fields configured")
+        if not all(
+            [self._non_agent_url, self._non_agent_user, self._non_agent_password]
+        ):
+            return ExternalPBXResult(
+                False, "update_lead", "Non-agent API is not configured"
+            )
+        lead_id = str(identity.get("lead_id", "")).strip()
+        if not lead_id:
+            return ExternalPBXResult(
+                False, "update_lead", "No VICIdial lead ID captured"
+            )
+
+        safe_fields: dict[str, str] = {}
+        for key, value in fields.items():
+            normalized = str(key).strip()
+            if (
+                not _LEAD_FIELD_RE.fullmatch(normalized)
+                or normalized.lower() in _RESERVED_LEAD_FIELDS
+            ):
+                logger.warning(
+                    f"[VICIdial] Ignoring invalid lead field name: {normalized!r}"
+                )
+                continue
+            safe_fields[normalized] = str(value)
+        if not safe_fields:
+            return ExternalPBXResult(
+                False, "update_lead", "No valid lead fields resolved"
+            )
+
+        params = {
+            **safe_fields,
+            "source": self._non_agent_source,
+            "user": self._non_agent_user,
+            "pass": self._non_agent_password,
+            "function": "update_lead",
+            "lead_id": lead_id,
+        }
+        try:
+            async with aiohttp.ClientSession(timeout=self._timeout) as session:
+                async with session.get(self._non_agent_url, params=params) as response:
+                    response_text = (await response.text()).strip()
+                    ok = response.status == 200 and response_text.startswith("SUCCESS")
+            logger.info(
+                "[VICIdial] update_lead completed "
+                f"status={response.status} ok={ok} field_count={len(safe_fields)}"
+            )
+            return ExternalPBXResult(
+                ok,
+                "update_lead",
+                "VICIdial lead updated" if ok else "VICIdial rejected the lead update",
+            )
+        except Exception as exc:
+            logger.error(f"[VICIdial] update_lead failed: {exc}")
+            return ExternalPBXResult(
+                False, "update_lead", "VICIdial API request failed"
+            )

api/services/telephony/providers/ari/provider.py

@@ -20,6 +20,7 @@ from api.services.telephony.base import (
     NormalizedInboundData,
     TelephonyProvider,
 )
+from api.services.telephony.providers.ari.external_pbx import create_adapter
 
 if TYPE_CHECKING:
     from fastapi import WebSocket
@@ -51,6 +52,7 @@ class ARIProvider(TelephonyProvider):
         self.app_name = config.get("app_name", "")
         self.app_password = config.get("app_password", "")
         self.from_numbers = config.get("from_numbers", [])
+        self.external_pbx_adapter = create_adapter(config.get("external_pbx"))
 
         if isinstance(self.from_numbers, str):
             self.from_numbers = [self.from_numbers]
@@ -363,6 +365,53 @@ class ARIProvider(TelephonyProvider):
         """ARI supports call transfers via bridge manipulation."""
         return True
 
+    async def transfer_external_pbx_call(
+        self,
+        *,
+        identity: Dict[str, Any],
+        destination: str,
+        field_updates: Optional[Dict[str, str]] = None,
+    ) -> Optional[Dict[str, Any]]:
+        """Delegate a PBX-owned customer leg to the configured adapter."""
+
+        adapter = self.external_pbx_adapter
+        if adapter is None or not identity:
+            return None
+        identity_type = identity.get("type") or identity.get("provider")
+        if identity_type != adapter.type:
+            logger.warning(
+                "[ARI External PBX] Captured identity does not match configured "
+                f"adapter: identity={identity_type!r} adapter={adapter.type!r}"
+            )
+            return {
+                "status": "failed",
+                "action": "external_pbx_transfer",
+                "message": "The external PBX call identity is invalid.",
+                "reason": "external_pbx_identity_mismatch",
+            }
+
+        update_result = None
+        if field_updates:
+            update_result = await adapter.update_fields(identity, field_updates)
+            if not update_result.ok:
+                logger.warning(
+                    "[ARI External PBX] Field update failed; continuing transfer "
+                    f"adapter={adapter.type} message={update_result.message}"
+                )
+
+        transfer_result = await adapter.transfer(identity, destination)
+        return {
+            "status": "success" if transfer_result.ok else "failed",
+            "action": "external_pbx_transfer",
+            "message": (
+                "Transferring your call now."
+                if transfer_result.ok
+                else "I'm sorry, I couldn't complete the transfer."
+            ),
+            "reason": None if transfer_result.ok else "external_pbx_transfer_failed",
+            "field_update_ok": update_result.ok if update_result else None,
+        }
+
     async def transfer_call(
         self,
         destination: str,

api/services/telephony/providers/ari/strategies.py

@@ -3,11 +3,14 @@
 This module contains the business logic for Asterisk ARI call operations.
 """
 
-from typing import Any, Dict
+from typing import TYPE_CHECKING, Any, Dict
 
 from loguru import logger
 from pipecat.serializers.call_strategies import HangupStrategy, TransferStrategy
 
+if TYPE_CHECKING:
+    from .external_pbx import ExternalPBXAdapter
+
 
 class ARIBridgeSwapStrategy(TransferStrategy):
     """Implements bridge swap transfer for Asterisk ARI.
@@ -200,6 +203,9 @@ class ARIBridgeSwapStrategy(TransferStrategy):
 class ARIHangupStrategy(HangupStrategy):
     """Implements hangup for Asterisk ARI channels."""
 
+    def __init__(self, external_pbx_adapter: "ExternalPBXAdapter | None" = None):
+        self._external_pbx_adapter = external_pbx_adapter
+
     async def execute_hangup(self, context: Dict[str, Any]) -> bool:
         """Hang up the Asterisk channel via ARI REST API."""
         try:
@@ -217,6 +223,10 @@ class ARIHangupStrategy(HangupStrategy):
                 )
                 return False
 
+            # The external PBX owns the real customer leg. End it before the
+            # local ARI leg so its conference teardown cannot race our SIP BYE.
+            await self._terminate_external_pbx_if_any(channel_id)
+
             endpoint = f"{ari_endpoint}/ari/channels/{channel_id}"
             auth = BasicAuth(app_name, app_password)
 
@@ -243,3 +253,76 @@ class ARIHangupStrategy(HangupStrategy):
         except Exception as e:
             logger.exception(f"Failed to hang up Asterisk channel: {e}")
             return False
+
+    async def _terminate_external_pbx_if_any(self, channel_id: str) -> None:
+        """If configured, hang up the external PBX's customer leg first.
+
+        Reuses the same channel->run lookup the transfer strategy uses
+        (Redis ``ari:channel:{id}`` -> run_id -> ``initial_context``). Best-effort:
+        never blocks dograh's own hangup if the upstream call fails.
+        """
+        redis = None
+        try:
+            import redis.asyncio as aioredis
+
+            from api.constants import REDIS_URL
+            from api.db import db_client
+
+            redis = aioredis.from_url(REDIS_URL, decode_responses=True)
+            run_id = await redis.get(f"ari:channel:{channel_id}")
+            if not run_id:
+                return
+            run = await db_client.get_workflow_run_by_id(int(run_id))
+            if not run:
+                return
+            identity = (run.initial_context or {}).get("external_pbx_call")
+            # Read the legacy key for calls created before this refactor.
+            identity = identity or (run.initial_context or {}).get("upstream_pbx")
+            # If the call was already transferred to the external PBX, the customer
+            # leg has moved on -- do NOT hang it up (that would drop the transferred
+            # customer); just let dograh's own legs tear down below.
+            transferred = (run.gathered_context or {}).get("external_pbx_transferred")
+            transferred = transferred or (run.gathered_context or {}).get(
+                "upstream_transferred"
+            )
+            if identity and not transferred and self._external_pbx_adapter:
+                from api.services.telephony.external_pbx import (
+                    resolve_external_pbx_field_mappings,
+                )
+
+                workflow_configurations = (
+                    await db_client.get_workflow_run_configurations(
+                        int(run_id), run.workflow.organization_id
+                    )
+                )
+                field_updates = resolve_external_pbx_field_mappings(
+                    run.gathered_context,
+                    workflow_configurations.get("external_pbx_field_mappings", []),
+                )
+                if field_updates:
+                    update_result = await self._external_pbx_adapter.update_fields(
+                        identity, field_updates
+                    )
+                    if not update_result.ok:
+                        logger.warning(
+                            "[ARI Hangup] External PBX field update failed; "
+                            f"continuing hangup: {update_result.message}"
+                        )
+                logger.info(
+                    "[ARI Hangup] External PBX call "
+                    f"({self._external_pbx_adapter.type}); "
+                    f"terminating customer leg via API before dropping dograh leg"
+                )
+                result = await self._external_pbx_adapter.hangup(identity)
+                if not result.ok:
+                    logger.warning(
+                        f"[ARI Hangup] External PBX rejected hangup: {result.message}"
+                    )
+        except Exception as e:
+            logger.error(f"[ARI Hangup] external PBX terminate check failed: {e}")
+        finally:
+            if redis is not None:
+                try:
+                    await redis.aclose()
+                except Exception as e:
+                    logger.warning(f"[ARI Hangup] failed to close Redis client: {e}")

api/services/telephony/providers/ari/transport.py

@@ -11,6 +11,7 @@ from api.services.pipecat.audio_mixer import build_audio_out_mixer
 from api.services.pipecat.transport_params import realtime_param_overrides
 from api.services.telephony.factory import load_credentials_for_transport
 
+from .external_pbx import create_adapter
 from .serializers import AsteriskFrameSerializer
 from .strategies import ARIBridgeSwapStrategy, ARIHangupStrategy
 
@@ -47,7 +48,9 @@ async def create_transport(
         app_name=app_name,
         app_password=app_password,
         transfer_strategy=ARIBridgeSwapStrategy(),
-        hangup_strategy=ARIHangupStrategy(),
+        hangup_strategy=ARIHangupStrategy(
+            external_pbx_adapter=create_adapter(config.get("external_pbx"))
+        ),
         params=AsteriskFrameSerializer.InputParams(
             asterisk_sample_rate=audio_config.transport_in_sample_rate,
             sample_rate=audio_config.pipeline_sample_rate,