diff --git a/slsReceiverSoftware/src/CommandLineOptions.cpp b/slsReceiverSoftware/src/CommandLineOptions.cpp
index 70606c73a..5c18458c4 100644
--- a/slsReceiverSoftware/src/CommandLineOptions.cpp
+++ b/slsReceiverSoftware/src/CommandLineOptions.cpp
@@ -7,11 +7,15 @@
 #include "sls/ToString.h"
 #include "sls/logger.h"
 
+#define MAX_RECEIVERS 1024
+
 ParsedOptions parseCommandLine(AppType app, int argc, char* argv[]) {
     CommonOptions base;
     base.port = DEFAULT_TCP_RX_PORTNO;
     MultiReceiverOptions multi;
     FrameSyncOptions frame;
+    uint16_t numReceivers = 1;
+    bool optionalArg = false;
 
     int opt;
     int option_index = 0;
@@ -31,6 +35,7 @@ ParsedOptions parseCommandLine(AppType app, int argc, char* argv[]) {
 
     static struct option multi_opts[] = {
         {"callback", no_argument, nullptr, 'c'},
+        {"rx_tcpport", required_argument, nullptr, 't'},
         {"num-receivers", required_argument, nullptr, 'n'},
         {nullptr, 0, nullptr, 0}
     };
@@ -44,7 +49,7 @@ ParsedOptions parseCommandLine(AppType app, int argc, char* argv[]) {
     std::vector<option> options;
     options.insert(options.end(), std::begin(common_opts), std::end(common_opts) - 1);
 
-     if (app == AppType::SingleReceiver) {
+    if (app == AppType::SingleReceiver) {
         options.insert(options.end(), std::begin(single_opts), std::end(single_opts) - 1);
     } else if (app == AppType::MultiReceiver) {
         options.insert(options.end(), std::begin(multi_opts), std::end(multi_opts) - 1);
@@ -55,8 +60,9 @@ ParsedOptions parseCommandLine(AppType app, int argc, char* argv[]) {
     std::string optstring = "vp:u:h";
     if (app == AppType::SingleReceiver) {
         optstring += "t:";
-    }
-    if (app == AppType::MultiReceiver || app == AppType::FrameSynchronizer) {
+    } else if (app == AppType::MultiReceiver) {
+        optstring += "cn:t:";
+    } else if (app == AppType::FrameSynchronizer) {
         optstring += "cn:";
     }
 
@@ -97,17 +103,28 @@ ParsedOptions parseCommandLine(AppType app, int argc, char* argv[]) {
                 break;
 
             case 'n':
-                if (app == AppType::MultiReceiver)
-                    multi.numReceivers = sls::StringTo<uint16_t>(optarg);
-                else if (app == AppType::FrameSynchronizer)
-                    frame.numReceivers = sls::StringTo<uint16_t>(optarg);
+                try {
+                    if (app == AppType::MultiReceiver)
+                        multi.numReceivers = sls::StringTo<uint16_t>(optarg);
+                    else if (app == AppType::FrameSynchronizer)
+                        frame.numReceivers = sls::StringTo<uint16_t>(optarg);
+                    if (numReceivers < 0 || numReceivers > MAX_RECEIVERS) {
+                        throw sls::RuntimeError("Invalid number of receivers. Max: "   + std::to_string(MAX_RECEIVERS));
+                    }
+                    multi.numReceivers = numReceivers;
+                    frame.numReceivers = numReceivers;
+                } catch (...) {
+                    throw sls::RuntimeError("Invalid number of receivers parsed." + std::to_string(numReceivers));
+                }
                 break;
 
             case 'c':
-                if (app == AppType::MultiReceiver)
+                optionalArg = true;
+                if (app == AppType::MultiReceiver) {
                     multi.callbackEnabled = true;
-                else if (app == AppType::FrameSynchronizer)
+                } else if (app == AppType::FrameSynchronizer) {
                     frame.printHeaders = true;
+                }
                 break;
 
             default:
@@ -116,15 +133,31 @@ ParsedOptions parseCommandLine(AppType app, int argc, char* argv[]) {
     }
     // remaining arguments
     if (optind < argc) {
-        throw(sls::RuntimeError(std::string("Invalid arguments\n") + getHelpMessage(app)));
+        // maintain backward compatibility of [start port] [num receivers] [optional arg] ( for multi receiver and frame synchronizer )
+        if (app != AppType::SingleReceiver && slsDetectorDefs::OK == GetDeprecatedCommandLineOptions(argc, argv, base.port, numReceivers, optionalArg)) {
+            if (app == AppType::MultiReceiver) {
+                multi.numReceivers = numReceivers;
+                multi.callbackEnabled = optionalArg;
+            } else if (app == AppType::FrameSynchronizer) {
+                frame.numReceivers = numReceivers;
+                frame.printHeaders = optionalArg;
+            }
+        } else {
+            throw sls::RuntimeError("Invalid arguments." + getHelpMessage(app));
+        }
     }
 
+    LOG(sls::logINFO) << "Number of receivers: " << numReceivers;
+    LOG(sls::logINFO) << "TCP Port: " << base.port;
     switch (app) {
-        case AppType::SingleReceiver: return base;
+        case AppType::SingleReceiver: 
+            return base;
         case AppType::MultiReceiver:
+            LOG(sls::logINFO) << "Call back enable: " << multi.callbackEnabled;
             static_cast<CommonOptions&>(multi) = base;
             return multi;
         case AppType::FrameSynchronizer:
+            LOG(sls::logINFO) << "Print headers: " << frame.printHeaders;
             static_cast<CommonOptions&>(frame) = base;
             return frame;
     }
@@ -132,6 +165,41 @@ ParsedOptions parseCommandLine(AppType app, int argc, char* argv[]) {
     throw std::logic_error("Unknown AppType");
 }
 
+
+int GetDeprecatedCommandLineOptions(int argc, char *argv[], uint16_t &startPort, uint16_t &numReceivers, bool &optionalArg) {
+    std::string deprecatedMessage =
+        "Detected deprecated Options. Please update.\n";
+    if (argc > 1) {
+        try {
+            if (argc == 3 || argc == 4) {
+                startPort = sls::StringTo<uint16_t>(argv[1]);
+                numReceivers = sls::StringTo<uint16_t>(argv[2]);
+                if (numReceivers > MAX_RECEIVERS) {
+                    LOG(sls::logWARNING) << deprecatedMessage;
+                    LOG(sls::logERROR)
+                        << "Did you mix up the order of the arguments? Max "
+                           "number of recievers: " << MAX_RECEIVERS;
+                    return slsDetectorDefs::FAIL;
+                }
+                if (numReceivers == 0) {
+                    LOG(sls::logWARNING) << deprecatedMessage;
+                    LOG(sls::logERROR) << "Invalid number of receivers. Options: 1 - " << MAX_RECEIVERS;
+                    return slsDetectorDefs::FAIL;
+                }
+                if (argc == 4) {
+                    optionalArg = sls::StringTo<bool>(argv[3]);
+                }
+            } else
+                throw std::runtime_error("Invalid number of arguments");
+        } catch (const std::exception &e) {
+            LOG(sls::logWARNING) << deprecatedMessage;
+            LOG(sls::logERROR) << e.what();
+            return slsDetectorDefs::FAIL;
+        }
+    }
+    return slsDetectorDefs::OK;
+}
+
 void setEffectiveUID(uid_t uid) {
     if (geteuid() == uid) {
         LOG(sls::logINFO)
diff --git a/slsReceiverSoftware/src/CommandLineOptions.h b/slsReceiverSoftware/src/CommandLineOptions.h
index 8da0539cd..299e8a7fd 100644
--- a/slsReceiverSoftware/src/CommandLineOptions.h
+++ b/slsReceiverSoftware/src/CommandLineOptions.h
@@ -36,7 +36,9 @@ struct FrameSyncOptions : CommonOptions {
 using ParsedOptions = std::variant<CommonOptions, MultiReceiverOptions, FrameSyncOptions>;
 
 ParsedOptions parseCommandLine(AppType app, int argc, char* argv[]);
+int GetDeprecatedCommandLineOptions(int argc, char *argv[], uint16_t &startPort, uint16_t &numReceivers, bool &optionalArg);
 void setEffectiveUID(uid_t uid);
+std::string getTypeString(const AppType app);
 std::string getVersion(AppType app);
 std::string getHelpMessage(AppType app);
 
diff --git a/slsReceiverSoftware/src/FrameSynchronizerApp.cpp b/slsReceiverSoftware/src/FrameSynchronizerApp.cpp
index 12b41ef7e..6286f53dd 100644
--- a/slsReceiverSoftware/src/FrameSynchronizerApp.cpp
+++ b/slsReceiverSoftware/src/FrameSynchronizerApp.cpp
@@ -10,13 +10,11 @@
 #include "sls/container_utils.h"
 #include "sls/logger.h"
 #include "sls/sls_detector_defs.h"
-#include "sls/versionAPI.h"
+#include "CommandLineOptions.h"
 
 #include <csignal> //SIGINT
 #include <cstdio>
 #include <cstring>
-#include <getopt.h>
-#include <iostream>
 #include <mutex>
 #include <ostream>
 #include <semaphore.h>
@@ -501,123 +499,14 @@ void GetDataCallback(slsDetectorDefs::sls_receiver_header &header,
     sem_post(&stat->available);
 }
 
-/**
- * Example of main program using the Receiver class
- *
- * - Defines in file for:
- *  	- Default Number of receivers is 1
- *  	- Default Start TCP port is 1954
- */
 int main(int argc, char *argv[]) {
-    uint16_t startPort = DEFAULT_TCP_RX_PORTNO;
-    uint16_t numReceivers = 1;
-    bool printHeaders = false;
-    uid_t userid = -1;
-
-    std::string help_message =
-        "\nUsage: " + std::string(argv[0]) + " Options:\n" +
-        "\t-v, --version       : Version of " + std::string(argv[0]) + ".\n" +
-        "\t-n, --num-receivers : Number of receivers.\n" +
-        "\t-p, --port          : TCP port to communicate with client for "
-        "configuration. Non-zero and 16 bit.\n" +
-        "\t-c, --print-headers : Print callback headers for debugging. "
-        "Disabled by default.\n" +
-        "\t-u, --uid           : Set effective user id if receiver started "
-        "with privileges. \n\n";
-
-    static struct option long_options[] = {
-        {"version", no_argument, nullptr, 'v'},
-        {"num-receivers", required_argument, nullptr, 'n'},
-        {"port", required_argument, nullptr, 'p'},
-        {"print-headers", no_argument, nullptr, 'c'},
-        {"uid", required_argument, nullptr, 'u'},
-        {"help", no_argument, nullptr, 'h'},
-        {nullptr, 0, nullptr, 0}};
-
-    int option_index = 0;
-    int opt = 0;
-    while (-1 != (opt = getopt_long(argc, argv, "vn:p:cu:h", long_options,
-                                    &option_index))) {
-
-        switch (opt) {
-
-        case 'v':
-            std::cout << argv[0] << " Version: " << APIRECEIVER << std::endl;
-            return (EXIT_SUCCESS);
-
-        case 'n':
-            try {
-                numReceivers = sls::StringTo<uint16_t>(optarg);
-                if (numReceivers == 0 || numReceivers > 100) {
-                    throw std::runtime_error("Invalid argument.");
-                }
-            } catch (...) {
-                throw sls::RuntimeError(
-                    "Invalid number of receivers. Max: 100." + help_message);
-            }
-            break;
-
-        case 'p':
-            try {
-                startPort = sls::StringTo<uint16_t>(optarg);
-            } catch (...) {
-                throw sls::RuntimeError("Could not scan port number." +
-                                        help_message);
-            }
-            break;
-
-        case 'c':
-            printHeaders = true;
-            break;
-
-        case 'u':
-            try {
-                userid = sls::StringTo<uint32_t>(optarg);
-            } catch (...) {
-                throw sls::RuntimeError("Invalid uid." + help_message);
-            }
-            break;
-
-        case 'h':
-            std::cout << help_message << std::endl;
-            return (EXIT_SUCCESS);
-
-        default:
-            LOG(sls::logERROR) << help_message;
-            return (EXIT_FAILURE);
-        }
-    }
-    // remaining arguments
-    if (optind < argc) {
-        LOG(sls::logERROR) << "Invalid arguments\n" << help_message;
-        return (EXIT_FAILURE);
+    auto opts = parseCommandLine(AppType::MultiReceiver, argc, argv);
+    auto& o = std::get<CommonOptions>(opts);
+    if (o.versionRequested || o.helpRequested) {
+        return EXIT_SUCCESS;
     }
 
     LOG(sls::logINFOBLUE) << "Current Process [ Tid: " << gettid() << ']';
-    LOG(sls::logINFO) << "Number of Receivers: " << numReceivers;
-    LOG(sls::logINFO) << "Start TCP Port: " << startPort;
-    LOG(sls::logINFO) << "Print Callback Headers: " << printHeaders;
-
-    // set effective id if provided
-    if (userid != static_cast<uid_t>(-1)) {
-        if (geteuid() == userid) {
-            LOG(sls::logINFO)
-                << "Process already has the same Effective UID " << userid;
-        } else {
-            if (seteuid(userid) != 0) {
-                std::ostringstream oss;
-                oss << "Could not set Effective UID to " << userid;
-                throw sls::RuntimeError(oss.str());
-            }
-            if (geteuid() != userid) {
-                std::ostringstream oss;
-                oss << "Could not set Effective UID to " << userid << ". Got "
-                    << geteuid();
-                throw sls::RuntimeError(oss.str());
-            }
-            LOG(sls::logINFO) << "Process Effective UID changed to " << userid;
-        }
-    }
 
     /** - Catch signal SIGINT to close files and call destructors properly */
     struct sigaction sa;
@@ -641,7 +530,8 @@ int main(int argc, char *argv[]) {
         cprintf(RED, "Could not set handler function for SIGPIPE\n");
     }
 
-    FrameStatus stat{true, false, numReceivers};
+    auto& f = std::get<FrameSyncOptions>(opts);
+    FrameStatus stat{true, false, f.numReceivers};
     // store pointer for signal handler
     global_frame_status = &stat;
 
@@ -649,12 +539,12 @@ int main(int argc, char *argv[]) {
     void *user_data = static_cast<void *>(&stat);
     std::thread combinerThread(Correlate, &stat);
 
-    for (int i = 0; i != numReceivers; ++i) {
+    for (int i = 0; i != f.numReceivers; ++i) {
         sem_t *semaphore = new sem_t;
         sem_init(semaphore, 1, 0);
         semaphores.push_back(semaphore);
 
-        uint16_t port = startPort + i;
+        uint16_t port = o.port + i;
         threads.emplace_back([i, semaphore, port, user_data]() {
             sls::Receiver receiver(port);
             receiver.registerCallBackStartAcquisition(StartAcquisitionCallback,
diff --git a/slsReceiverSoftware/src/MultiReceiverApp.cpp b/slsReceiverSoftware/src/MultiReceiverApp.cpp
index 651fd083c..fd3e7fc4a 100644
--- a/slsReceiverSoftware/src/MultiReceiverApp.cpp
+++ b/slsReceiverSoftware/src/MultiReceiverApp.cpp
@@ -7,13 +7,10 @@
 #include "sls/container_utils.h"
 #include "sls/logger.h"
 #include "sls/sls_detector_defs.h"
-#include "sls/sls_detector_exceptions.h"
-#include "sls/versionAPI.h"
+#include "CommandLineOptions.h"
 
 #include <csignal> //SIGINT
 #include <cstring>
-#include <getopt.h>
-#include <iostream>
 #include <semaphore.h>
 #include <sys/wait.h> //wait
 #include <unistd.h>
@@ -140,171 +137,17 @@ void GetData(slsDetectorDefs::sls_receiver_header &header,
  */
 void sigInterruptHandler(int p) { sem_post(&semaphore); }
 
-int GetDeprecatedCommandLineOptions(int argc, char *argv[], uint16_t &startPort,
-                                    uint16_t &numReceivers,
-                                    bool &callbackEnabled) {
-    std::string deprecatedMessage =
-        "Detected deprecated Options. Please update.\n";
-    if (argc > 1) {
-        try {
-            if (argc == 3 || argc == 4) {
-                startPort = sls::StringTo<uint16_t>(argv[1]);
-                numReceivers = sls::StringTo<uint16_t>(argv[2]);
-                if (numReceivers > 100) {
-                    LOG(sls::logWARNING) << deprecatedMessage;
-                    LOG(sls::logERROR)
-                        << "Did you mix up the order of the arguments? Max "
-                           "number of recievers: 100";
-                    return slsDetectorDefs::FAIL;
-                }
-                if (numReceivers == 0) {
-                    LOG(sls::logWARNING) << deprecatedMessage;
-                    LOG(sls::logERROR) << "Invalid number of receivers.";
-                    return slsDetectorDefs::FAIL;
-                }
-                if (argc == 4) {
-                    callbackEnabled = sls::StringTo<bool>(argv[3]);
-                }
-            } else
-                throw std::runtime_error("Invalid number of arguments");
-        } catch (const std::exception &e) {
-            LOG(sls::logWARNING) << deprecatedMessage;
-            LOG(sls::logERROR) << e.what();
-            return slsDetectorDefs::FAIL;
-        }
-    }
-    return slsDetectorDefs::OK;
-}
 
-std::string getHelpMessage() {
-    std::string name = "slsMultiReceiver";
-    return "\nUsage: " + name + " Options:\n" +
-           "\t-v, --version       : Version of " + name + ".\n" +
-           "\t-n, --num-receivers : Number of receivers.\n" +
-           "\t-p, --port          : TCP port to communicate with client for "
-           "configuration. Non-zero and 16 bit.\n" +
-           "\t-c, --callback      : Enable dummy callbacks for debugging. "
-           "Disabled by default. \n" +
-           "\t-u, --uid           : Set effective user id if receiver started "
-           "with privileges. \n\n";
-}
 
-/**
- * Example of main program using the Receiver class
- *
- * - Defines in file for:
- *  	- Default Number of receivers is 1
- *  	- Default Start TCP port is 1954
- */
 int main(int argc, char *argv[]) {
-    uint16_t startPort = DEFAULT_TCP_RX_PORTNO;
-    uint16_t numReceivers = 1;
-    bool callbackEnabled = false;
-    uid_t userid = -1;
 
-    std::string help_message = getHelpMessage();
-
-    static struct option long_options[] = {
-        {"version", no_argument, nullptr, 'v'},
-        {"num-receivers", required_argument, nullptr, 'n'},
-        {"rx_tcpport", required_argument, nullptr, 't'},
-        {"port", required_argument, nullptr, 'p'},
-        {"callback", no_argument, nullptr, 'c'},
-        {"uid", required_argument, nullptr, 'u'},
-        {"help", no_argument, nullptr, 'h'},
-        {nullptr, 0, nullptr, 0}};
-
-    int option_index = 0;
-    int opt = 0;
-    while (-1 != (opt = getopt_long(argc, argv, "vn:t:p:cu:h", long_options,
-                                    &option_index))) {
-
-        switch (opt) {
-
-        case 'v':
-            std::cout << argv[0] << " Version: " << APIRECEIVER << std::endl;
-            return EXIT_SUCCESS;
-
-        case 'n':
-            try {
-                numReceivers = sls::StringTo<uint16_t>(optarg);
-                if (numReceivers == 0 || numReceivers > 100) {
-                    throw std::runtime_error("Invalid argument.");
-                }
-            } catch (...) {
-                throw sls::RuntimeError("Invalid number of receivers." +
-                                        help_message);
-            }
-            break;
-
-        case 't':
-            LOG(sls::logWARNING)
-                << "Deprecated option. Please use 'p' or '--port'.";
-            [[fallthrough]];
-        case 'p':
-            try {
-                startPort = sls::StringTo<uint16_t>(optarg);
-            } catch (...) {
-                throw sls::RuntimeError("Could not scan port number." +
-                                        help_message);
-            }
-            break;
-
-        case 'c':
-            callbackEnabled = true;
-            break;
-
-        case 'u':
-            try {
-                userid = sls::StringTo<uint32_t>(optarg);
-            } catch (...) {
-                throw sls::RuntimeError("Invalid uid." + help_message);
-            }
-            break;
-
-        case 'h':
-            std::cout << help_message << std::endl;
-            return EXIT_SUCCESS;
-
-        default:
-            LOG(sls::logERROR) << help_message;
-            return EXIT_FAILURE;
-        }
-    }
-    // if remaining arguments, maintain backward compatibility of [startport]
-    // [num-receivers] [callback]
-    if (optind < argc) {
-        if (slsDetectorDefs::FAIL ==
-            GetDeprecatedCommandLineOptions(argc, argv, startPort, numReceivers,
-                                            callbackEnabled))
-            return EXIT_FAILURE;
+    auto opts = parseCommandLine(AppType::MultiReceiver, argc, argv);
+    auto& o = std::get<CommonOptions>(opts);
+    if (o.versionRequested || o.helpRequested) {
+        return EXIT_SUCCESS;
     }
 
     LOG(sls::logINFOBLUE) << "Current Process [ Tid: " << gettid() << ']';
-    LOG(sls::logINFO) << "Number of Receivers: " << numReceivers;
-    LOG(sls::logINFO) << "Start TCP Port: " << startPort;
-    LOG(sls::logINFO) << "Callback Enable: " << callbackEnabled;
-
-    // set effective id if provided
-    if (userid != static_cast<uid_t>(-1)) {
-        if (geteuid() == userid) {
-            LOG(sls::logINFO)
-                << "Process already has the same Effective UID " << userid;
-        } else {
-            if (seteuid(userid) != 0) {
-                std::ostringstream oss;
-                oss << "Could not set Effective UID to " << userid;
-                throw sls::RuntimeError(oss.str());
-            }
-            if (geteuid() != userid) {
-                std::ostringstream oss;
-                oss << "Could not set Effective UID to " << userid << ". Got "
-                    << geteuid();
-                throw sls::RuntimeError(oss.str());
-            }
-            LOG(sls::logINFO) << "Process Effective UID changed to " << userid;
-        }
-    }
 
     /** - Catch signal SIGINT to close files and call destructors properly */
     struct sigaction sa;
@@ -330,7 +173,8 @@ int main(int argc, char *argv[]) {
 
     /** - loop over number of receivers */
     sem_init(&semaphore, 1, 0);
-    for (int i = 0; i < numReceivers; ++i) {
+    auto& m = std::get<MultiReceiverOptions>(opts);
+    for (int i = 0; i < m.numReceivers; ++i) {
 
         /**	- fork process to create child process */
         pid_t pid = fork();
@@ -349,13 +193,13 @@ int main(int argc, char *argv[]) {
                 << "Child process " << i << " [ Tid: " << gettid() << ']';
 
             try {
-                uint16_t port = startPort + i;
+                uint16_t port = o.port + i;
                 sls::Receiver receiver(port);
 
                 /**	- register callbacks. remember to set file write enable
                  * to 0 (using the client) if we should not write files and you
                  * will write data using the callbacks */
-                if (callbackEnabled) {
+                if (m.callbackEnabled) {
 
                     /** - Call back for start acquisition */
                     LOG(sls::logINFOBLUE) << "Registering StartAcq()";
diff --git a/slsReceiverSoftware/src/ReceiverApp.cpp b/slsReceiverSoftware/src/ReceiverApp.cpp
index 9c59ffe9e..ff96d721c 100644
--- a/slsReceiverSoftware/src/ReceiverApp.cpp
+++ b/slsReceiverSoftware/src/ReceiverApp.cpp
@@ -6,11 +6,9 @@
 #include "sls/container_utils.h"
 #include "sls/logger.h"
 #include "sls/sls_detector_defs.h"
-#include "sls/versionAPI.h"
 #include "CommandLineOptions.h"
 
 #include <csignal> //SIGINT
-#include <getopt.h>
 #include <semaphore.h>
 #include <unistd.h>
 
@@ -33,8 +31,6 @@ int main(int argc, char *argv[]) {
     }
 
     LOG(sls::logINFOBLUE) << "Current Process [ Tid: " << gettid() << " ]";
-    LOG(sls::logINFO) << "Port: " << o.port;
-
 
     // Catch signal SIGINT to close files and call destructors properly
     struct sigaction sa;