Disable unneeded libtgvoip, tgcalls provide everything we need; from alt linux
http://www.sisyphus.ru/cgi-bin/srpm.pl/Sisyphus/telegram-desktop/getpatch/1

Index: Telegram/SourceFiles/calls/calls_call.cpp
--- Telegram/SourceFiles/calls/calls_call.cpp.orig
+++ Telegram/SourceFiles/calls/calls_call.cpp
@@ -39,8 +39,6 @@ class InstanceImpl;
 class InstanceV2Impl;
 class InstanceV2ReferenceImpl;
 class InstanceV2_4_0_0Impl;
-class InstanceImplLegacy;
-void SetLegacyGlobalServerConfig(const std::string &serverConfig);
 } // namespace tgcalls
 
 namespace Calls {
@@ -56,7 +54,6 @@ const auto Register = tgcalls::Register<tgcalls::Insta
 const auto RegisterV2 = tgcalls::Register<tgcalls::InstanceV2Impl>();
 const auto RegV2Ref = tgcalls::Register<tgcalls::InstanceV2ReferenceImpl>();
 const auto RegisterV240 = tgcalls::Register<tgcalls::InstanceV2_4_0_0Impl>();
-const auto RegisterLegacy = tgcalls::Register<tgcalls::InstanceImplLegacy>();
 
 [[nodiscard]] base::flat_set<int64> CollectEndpointIds(
 		const QVector<MTPPhoneConnection> &list) {
@@ -1322,7 +1319,6 @@ Call::~Call() {
 }
 
 void UpdateConfig(const std::string &data) {
-	tgcalls::SetLegacyGlobalServerConfig(data);
 }
 
 } // namespace Calls
