increase V.24 outbound rate for TSDUs;

src/host/modem/ModemV24.cpp

@@ -2333,8 +2333,11 @@ void ModemV24::queueP25Frame(uint8_t* data, uint16_t len, SERIAL_TX_TYPE msgType
         // otherwise, we time out messages as required by the message type
         else {
             if (msgType == STT_DATA) {
-                // IMBEs must go out at 20ms intervals
+                // data must go out at 20ms intervals
                 msgTime = m_lastP25Tx + 20U;
+            } else if (msgType == STT_DATA_FAST) {
+                // fast data must go out at 10ms intervals
+                msgTime = m_lastP25Tx + 10U;
             } else {
                 // Otherwise we don't care, we use 5ms since that's the theoretical minimum time a 9600 baud message can take
                 msgTime = m_lastP25Tx + 5U;
@@ -3128,7 +3131,7 @@ void ModemV24::convertFromAirV24(uint8_t* data, uint32_t length)
             if (m_trace)
                 Utils::dump(1U, "ModemV24::convertFromAirV24(), MotTSBKFrame", tsbkBuf, DFSI_MOT_TSBK_LEN);
 
-            queueP25Frame(tsbkBuf, DFSI_MOT_TSBK_LEN, STT_DATA);
+            queueP25Frame(tsbkBuf, DFSI_MOT_TSBK_LEN, STT_DATA_FAST);
         }
         break;
 

src/host/modem/ModemV24.h

@@ -44,7 +44,8 @@ namespace modem
         STT_NO_DATA,                        //!< No Data
         STT_START_STOP,                     //!< Start/Stop Signalling Frame
         STT_START_STOP_NO_JITTER,           //!< Start/Stop Signalling Frame with Jitter Disabled
-        STT_DATA                            //!< Paced Data/Signalling Frame or IMBE Voice Frame
+        STT_DATA,                           //!< Paced Data/Signalling Frame or IMBE Voice Frame
+        STT_DATA_FAST                       //!< Fast Paced Data/Signalling Frame
     };
 
     /** @} */

src/host/p25/Control.cpp

@@ -116,7 +116,7 @@ Control::Control(bool authoritative, uint32_t nac, uint32_t callHang, uint32_t q
     m_networkWatchdog(1000U, 0U, 1500U),
     m_adjSiteUpdate(1000U, 75U),
     m_activeTGUpdate(1000U, 5U),
-    m_ccPacketInterval(1000U, 0U, 20U),
+    m_ccPacketInterval(1000U, 0U, 15U),
     m_rfVoiceCallTermTimeout(1000U, VOICE_CALL_TERM_TIMEOUT),
     m_interval(),
     m_hangCount(3U * 8U),