diff --git a/driver/CMakeLists.txt b/driver/CMakeLists.txt
index 2e76cf1..5698095 100644
--- a/driver/CMakeLists.txt
+++ b/driver/CMakeLists.txt
@@ -17,7 +17,9 @@ add_library(${DRIVER_NAME} MODULE
   log_manager.cpp
   log_sender.cpp
   log_syslog.cpp
+  receiver.cpp
   rpc_serdes.cpp
+  sender.cpp
   tracer.cpp
   uid_generator.cpp
 )
@@ -28,6 +30,7 @@ target_link_libraries(${DRIVER_NAME} PRIVATE
   ${RPC_LIB}
 
   # third-party libs
+  roc
   aspl::libASPL
   gRPC::grpc++_unsecure
   spdlog::spdlog
diff --git a/driver/device.cpp b/driver/device.cpp
index 6683f36..23ee357 100644
--- a/driver/device.cpp
+++ b/driver/device.cpp
@@ -8,6 +8,8 @@
 
 #include "device.hpp"
 #include "build_info.hpp"
+#include "receiver.hpp"
+#include "sender.hpp"
 
 #include <fmt/core.h>
 #include <spdlog/spdlog.h>
@@ -116,6 +118,7 @@ aspl::StreamParameters make_stream_params(const DeviceInfo& info)
 } // namespace
 
 Device::Device(std::shared_ptr<aspl::Plugin> hal_plugin,
+    std::shared_ptr<roc_context> network_context,
     IndexAllocator& index_allocator,
     UidGenerator& uid_generator,
     const DeviceInfo& device_info)
@@ -151,7 +154,21 @@ Device::Device(std::shared_ptr<aspl::Plugin> hal_plugin,
 
     hal_device_->AddStreamWithControlsAsync(make_stream_params(info_));
 
-    // TODO: roc_open
+    // we implement both interfaces
+    hal_device_->SetControlHandler(this);
+    hal_device_->SetIOHandler(this);
+
+    if (info_.type == DeviceType::Sender) {
+        network_transceiver_ = std::make_unique<Sender>(
+            network_context, info_.uid, info_.device_encoding, *info_.sender_config);
+    } else {
+        network_transceiver_ = std::make_unique<Receiver>(
+            network_context, info_.uid, info_.device_encoding, *info_.receiver_config);
+    }
+
+    if (!info_.enabled) {
+        network_transceiver_->pause();
+    }
 
     sort_endpoints_();
 
@@ -176,7 +193,7 @@ Device::~Device()
 
     toggle(false);
 
-    // TODO: roc_close
+    network_transceiver_.reset();
 
     if (info_.index != 0) {
         index_allocator_.release(info_.index);
@@ -197,6 +214,7 @@ void Device::toggle(bool enabled)
             spdlog::debug("enabling device {}", info_.uid);
 
             hal_plugin_->AddDevice(hal_device_);
+            network_transceiver_->resume();
         } else {
             spdlog::debug("device {} is already enabled", info_.uid);
         }
@@ -205,6 +223,7 @@ void Device::toggle(bool enabled)
             spdlog::debug("disabling device {}", info_.uid);
 
             hal_plugin_->RemoveDevice(hal_device_);
+            network_transceiver_->pause();
         } else {
             spdlog::debug("device {} is already disabled", info_.uid);
         }
@@ -240,7 +259,7 @@ void Device::bind_endpoint_(DeviceEndpointInfo& endpoint_info)
         endpoint_info.slot,
         endpoint_info.uri);
 
-    // TODO: roc_bind
+    network_transceiver_->bind(endpoint_info);
 }
 
 void Device::connect_endpoint_(DeviceEndpointInfo& endpoint_info)
@@ -250,7 +269,7 @@ void Device::connect_endpoint_(DeviceEndpointInfo& endpoint_info)
         endpoint_info.slot,
         endpoint_info.uri);
 
-    // TODO: roc_connect
+    network_transceiver_->connect(endpoint_info);
 }
 
 void Device::sort_endpoints_()
@@ -268,4 +287,43 @@ void Device::sort_endpoints_()
     }
 }
 
+// aspl::ControlRequestHandler
+OSStatus Device::OnStartIO()
+{
+    spdlog::info("starting io on device {}", info_.uid);
+
+    network_transceiver_->resume();
+
+    return kAudioHardwareNoError;
+}
+
+void Device::OnStopIO()
+{
+    spdlog::info("stopping io on device {}", info_.uid);
+
+    network_transceiver_->pause();
+}
+
+// aspl::IORequestHandler
+void Device::OnReadClientInput(const std::shared_ptr<aspl::Client>& client,
+    const std::shared_ptr<aspl::Stream>& stream,
+    Float64 zero_timestamp,
+    Float64 timestamp,
+    void* bytes,
+    UInt32 bytes_count)
+{
+    // TODO: ringbuf
+    network_transceiver_->read((uint64_t)timestamp, bytes, bytes_count);
+}
+
+void Device::OnWriteMixedOutput(const std::shared_ptr<aspl::Stream>& stream,
+    Float64 zero_timestamp,
+    Float64 timestamp,
+    const void* bytes,
+    UInt32 bytes_count)
+{
+    // TODO: ringbuf
+    network_transceiver_->write((uint64_t)timestamp, bytes, bytes_count);
+}
+
 } // namespace rocvad
diff --git a/driver/device.hpp b/driver/device.hpp
index 4b4c19e..0a77c7b 100644
--- a/driver/device.hpp
+++ b/driver/device.hpp
@@ -10,8 +10,11 @@
 
 #include "device_defs.hpp"
 #include "index_allocator.hpp"
+#include "transceiver.hpp"
 #include "uid_generator.hpp"
 
+#include <roc/context.h>
+
 #include <aspl/Device.hpp>
 #include <aspl/Plugin.hpp>
 
@@ -20,10 +23,11 @@
 namespace rocvad {
 
 // Correspond to one virtual device.
-class Device
+class Device : private aspl::ControlRequestHandler, private aspl::IORequestHandler
 {
 public:
     Device(std::shared_ptr<aspl::Plugin> hal_plugin,
+        std::shared_ptr<roc_context> network_context,
         IndexAllocator& index_allocator,
         UidGenerator& uid_generator,
         const DeviceInfo& device_info);
@@ -40,6 +44,24 @@ class Device
     DeviceEndpointInfo connect(DeviceEndpointInfo endpoint_info);
 
 private:
+    // aspl::ControlRequestHandler
+    OSStatus OnStartIO() override;
+    void OnStopIO() override;
+
+    // aspl::IORequestHandler
+    void OnReadClientInput(const std::shared_ptr<aspl::Client>& client,
+        const std::shared_ptr<aspl::Stream>& stream,
+        Float64 zero_timestamp,
+        Float64 timestamp,
+        void* bytes,
+        UInt32 bytes_count) override;
+    void OnWriteMixedOutput(const std::shared_ptr<aspl::Stream>& stream,
+        Float64 zero_timestamp,
+        Float64 timestamp,
+        const void* bytes,
+        UInt32 bytes_count) override;
+
+    // endpoints
     void bind_endpoint_(DeviceEndpointInfo& endpoint_info);
     void connect_endpoint_(DeviceEndpointInfo& endpoint_info);
     void sort_endpoints_();
@@ -54,6 +76,9 @@ class Device
     std::shared_ptr<aspl::Plugin> hal_plugin_;
     std::shared_ptr<aspl::Device> hal_device_;
 
+    // network sender or receiver
+    // which one is used depends on device type
+    std::unique_ptr<Transceiver> network_transceiver_;
 
     // run-time device info
     DeviceInfo info_;
diff --git a/driver/device_manager.cpp b/driver/device_manager.cpp
index 0d1be28..316a22a 100644
--- a/driver/device_manager.cpp
+++ b/driver/device_manager.cpp
@@ -16,6 +16,30 @@
 
 namespace rocvad {
 
+namespace {
+
+std::shared_ptr<roc_context> make_network_context()
+{
+    roc_context_config config;
+    memset(&config, 0, sizeof(config));
+
+    roc_context* context = nullptr;
+    int err = roc_context_open(&config, &context);
+    if (err < 0) {
+        spdlog::critical("can't open network context: err={}", err);
+        return {};
+    }
+
+    return std::shared_ptr<roc_context>(context, [](roc_context* context) {
+        int err = roc_context_close(context);
+        if (err < 0) {
+            spdlog::critical("can't close network context: err={}", err);
+        }
+    });
+}
+
+} // namespace
+
 DeviceManager::DeviceManager(std::shared_ptr<aspl::Plugin> hal_plugin,
     std::shared_ptr<aspl::Storage> hal_storage)
     : hal_plugin_(hal_plugin)
@@ -23,6 +47,8 @@ DeviceManager::DeviceManager(std::shared_ptr<aspl::Plugin> hal_plugin,
 {
     assert(hal_plugin_);
 
+    network_context_ = make_network_context();
+
     load_devices_();
 }
 
@@ -71,8 +97,8 @@ DeviceInfo DeviceManager::add_device(DeviceInfo info)
             fmt::format("device with uid \"{}\" already exists", info.uid));
     }
 
-    auto device =
-        std::make_shared<Device>(hal_plugin_, index_allocator_, uid_generator_, info);
+    auto device = std::make_shared<Device>(
+        hal_plugin_, network_context_, index_allocator_, uid_generator_, info);
 
     info = device->info();
 
diff --git a/driver/device_manager.hpp b/driver/device_manager.hpp
index ea30e2b..8aa0eff 100644
--- a/driver/device_manager.hpp
+++ b/driver/device_manager.hpp
@@ -13,6 +13,8 @@
 #include "index_allocator.hpp"
 #include "uid_generator.hpp"
 
+#include <roc/context.h>
+
 #include <aspl/Plugin.hpp>
 #include <aspl/Storage.hpp>
 
@@ -75,6 +77,8 @@ class DeviceManager
     UidGenerator uid_generator_;
 
     DeviceStorage device_storage_;
+
+    std::shared_ptr<roc_context> network_context_;
 };
 
 } // namespace rocvad
diff --git a/driver/receiver.cpp b/driver/receiver.cpp
new file mode 100644
index 0000000..909f227
--- /dev/null
+++ b/driver/receiver.cpp
@@ -0,0 +1,40 @@
+/*
+ * Copyright (c) Roc Streaming authors
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+#include "receiver.hpp"
+
+namespace rocvad {
+
+Receiver::Receiver(std::shared_ptr<roc_context> network_context,
+    const std::string& uid,
+    const DeviceLocalEncoding& device_encoding,
+    const DeviceReceiverConfig& receiver_config)
+{
+}
+
+void Receiver::bind(DeviceEndpointInfo& endpoint_info)
+{
+}
+
+void Receiver::connect(DeviceEndpointInfo& endpoint_info)
+{
+}
+
+void Receiver::pause() noexcept
+{
+}
+
+void Receiver::resume() noexcept
+{
+}
+
+void Receiver::read(uint64_t timestamp, void* bytes, size_t n_bytes) noexcept
+{
+}
+
+} // namespace rocvad
diff --git a/driver/receiver.hpp b/driver/receiver.hpp
new file mode 100644
index 0000000..7c80419
--- /dev/null
+++ b/driver/receiver.hpp
@@ -0,0 +1,41 @@
+/*
+ * Copyright (c) Roc Streaming authors
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+#pragma once
+
+#include "transceiver.hpp"
+
+#include <roc/context.h>
+#include <roc/receiver.h>
+
+namespace rocvad {
+
+class Receiver : public Transceiver
+{
+public:
+    Receiver(std::shared_ptr<roc_context> network_context,
+        const std::string& uid,
+        const DeviceLocalEncoding& device_encoding,
+        const DeviceReceiverConfig& receiver_config);
+
+    void bind(DeviceEndpointInfo& endpoint_info) override;
+    void connect(DeviceEndpointInfo& endpoint_info) override;
+
+    void pause() noexcept override;
+    void resume() noexcept override;
+
+    void read(uint64_t timestamp, void* bytes, size_t n_bytes) noexcept override;
+
+private:
+    std::string uid_;
+
+    std::shared_ptr<roc_context> net_context_;
+    std::shared_ptr<roc_receiver> net_receiver_;
+};
+
+} // namespace rocvad
diff --git a/driver/sender.cpp b/driver/sender.cpp
new file mode 100644
index 0000000..7621c6f
--- /dev/null
+++ b/driver/sender.cpp
@@ -0,0 +1,40 @@
+/*
+ * Copyright (c) Roc Streaming authors
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+#include "sender.hpp"
+
+namespace rocvad {
+
+Sender::Sender(std::shared_ptr<roc_context> network_context,
+    const std::string& uid,
+    const DeviceLocalEncoding& device_encoding,
+    const DeviceSenderConfig& sender_config)
+{
+}
+
+void Sender::bind(DeviceEndpointInfo& endpoint_info)
+{
+}
+
+void Sender::connect(DeviceEndpointInfo& endpoint_info)
+{
+}
+
+void Sender::pause() noexcept
+{
+}
+
+void Sender::resume() noexcept
+{
+}
+
+void Sender::write(uint64_t timestamp, const void* bytes, size_t n_bytes) noexcept
+{
+}
+
+} // namespace rocvad
diff --git a/driver/sender.hpp b/driver/sender.hpp
new file mode 100644
index 0000000..73e701f
--- /dev/null
+++ b/driver/sender.hpp
@@ -0,0 +1,41 @@
+/*
+ * Copyright (c) Roc Streaming authors
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+#pragma once
+
+#include "transceiver.hpp"
+
+#include <roc/context.h>
+#include <roc/sender.h>
+
+namespace rocvad {
+
+class Sender : public Transceiver
+{
+public:
+    Sender(std::shared_ptr<roc_context> network_context,
+        const std::string& uid,
+        const DeviceLocalEncoding& device_encoding,
+        const DeviceSenderConfig& sender_config);
+
+    void bind(DeviceEndpointInfo& endpoint_info) override;
+    void connect(DeviceEndpointInfo& endpoint_info) override;
+
+    void pause() noexcept override;
+    void resume() noexcept override;
+
+    void write(uint64_t timestamp, const void* bytes, size_t n_bytes) noexcept override;
+
+private:
+    std::string uid_;
+
+    std::shared_ptr<roc_context> net_context_;
+    std::shared_ptr<roc_sender> net_sender_;
+};
+
+} // namespace rocvad
diff --git a/driver/transceiver.hpp b/driver/transceiver.hpp
new file mode 100644
index 0000000..8b3c531
--- /dev/null
+++ b/driver/transceiver.hpp
@@ -0,0 +1,50 @@
+/*
+ * Copyright (c) Roc Streaming authors
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+#pragma once
+
+#include "device_defs.hpp"
+
+#include <cstdint>
+#include <cstdlib>
+#include <cstring>
+
+namespace rocvad {
+
+// Base class for sender and receiver
+class Transceiver
+{
+public:
+    Transceiver() = default;
+    virtual ~Transceiver() = default;
+
+    Transceiver(const Transceiver&) = delete;
+    Transceiver& operator=(const Transceiver&) = delete;
+
+    // may modify endpoint_info
+    // may throw
+    virtual void bind(DeviceEndpointInfo& endpoint_info) = 0;
+    virtual void connect(DeviceEndpointInfo& endpoint_info) = 0;
+
+    // called when I/O is stopped / started
+    virtual void pause() noexcept = 0;
+    virtual void resume() noexcept = 0;
+
+    // for sender
+    virtual void write(uint64_t timestamp, const void* bytes, size_t n_bytes) noexcept
+    {
+    }
+
+    // for receiver
+    virtual void read(uint64_t timestamp, void* bytes, size_t n_bytes) noexcept
+    {
+        memset(bytes, 0, n_bytes);
+    }
+};
+
+} // namespace rocvad