Configuring Push-to-Talk and Group Paging
The Push-to-Talk (PTT) and Group Paging features are supported on all Poly phone models installed with UC software 4.0.0 or later.
NOTE: The Poly Trio 8800 or Trio 8500, unlike the VVX Business Media Phones and SoundPoint or SoundStation IP Phone Range, does not PTT / Push to Talk!
At present the Trio can only receive a Page or be part of a Paging Group but cannot send a page itself.
The Group Paging feature enables you to make pages aka a —one way audio announcements — to users subscribed to a page group.
The Push-to-Talk (PTT) feature is a collaborative tool that enables you to exchange broadcasts to users subscribed to a PTT channel, much like a walkie-talkie.
PTT broadcasts can be transmitted via the speakerphone, handset, and headset, and pages can be received only through the speakerphone.
Both features are available on all phones that use UC Software 4.0.0 or later.
You can enable one of these features or you can operate both simultaneously.
Paging and PTT each have 25 groups/channels you can subscribe to.
Paging Mode Paging mode is intended primarily for desktop phones.
In Paging mode, you can send announcements to recipients subscribed to a page group.
In Page mode, announcements play only through the phone’s speakerphone.
In order to customize the availability of the Page functionality for other call scenarios please check the Soft Key Example 5 => here <=
Setting a fixed paging Volume:
The ptt.volume parameter (UC Software 4.0.5 or later) can be used to set a pre-defined paging Volume.
Logs:
In order to get logs for PTT please set the following logging levels
Sending a Page:
0416203614|ptt |2|00|[PpsPttC]: app2PpsTalkPressed 0416203614|ptt |2|00| [PpsPttC]::ppsProcMsg() starting PTT/Page call 0416203614|ptt |1|00|[PpsPttChanC]: PTT channel=26, current state=Idle,event=KeyTalk, enter next state=Alert 0416203614|ptt |2|00| [PpsPttC]::ppsProcMsg(): MsgPpsTalkPressed channel 26,Ptt AppId 0 0416203614|ptt |2|00| [PpsPttC]::ppsProcMsg(): MsgPpsTalkPressed Mode=wlanModeTimeReleased, Release Interval 30ms, channel 26,Ptt AppId 0 0416203615|ptt |1|00|[PpsPttChanC]: PTT channel=26, current state=Alert,event=Timeout, enter next state=Transmit 0416203623|ptt |2|00|[PpsPttC]: app2PpsTalkReleased 0416203623|ptt |1|00|[PpsPttChanC]: PTT channel=26, current state=Transmit,event=KeyNone, enter next state=EOTWait 0416203623|ptt |2|00| [PpsPttC]::ppsProcMsg() releasing call 0416203623|ptt |2|00| [PpsPttC]::ppsProcMsg(): MsgPpsTalkReleased Channel 26, Ptt AppId 0 0416203623|ptt |2|00| [PpsPttC]::ppsProcMsg(): MsgPpsTalkReleased Mode=wlanModePttRx Channel 26,Ptt AppId 0 0416203623|ptt |1|00|[PpsPttChanC]: PTT channel=26, current state=EOTWait,event=Timeout, enter next state=EOT 0416203623|ptt |2|00|[PpsPttC]: mediaSess2PpsCallRelease NetCall(0xb09379c0) UsrCall(0xb52bce20) Reason(3) 0416203623|ptt |2|00| [PpsPttC]::ppsProcMsg(): MsgPpsCallDrop channel 26, reason 3 0416203623|ptt |2|00| [PpsPttC]::ppsProcMsg(): MsgPpsCallDrop Channel 26,Ptt AppId 0 0416203623|ptt |2|00| [PpsPttC]::ppsProcMsg(): MsgPpsCallDrop Mode=wlanModeStandby,Release Interval 650ms, Channel 26, Deleting the Ptt AppId 0 0416203623|ptt |2|00| [PpsPttC]::ppsProcMsg(): MsgPpsCallDrop Mode=wlanModeStandby,Release Interval 650ms Channel 26,After deleting the Ptt AppId 0 0416203623|so |4|00|MsgAppCallRemotePartyGetCmnd: Current Media Session is not in Active List. 0416203623|so |4|00|MsgAppCallRemotePartyGetCmnd: Current Media Session is not in Active List. 0416203623|app1 |4|00|AppHybridC::termLclChg failed to find pCall 0416203624|ptt |1|00|[PpsPttChanC]: PTT channel=26, current state=EOT,event=Timeout, enter next state=Waiting 0416203624|ptt |1|00|[PpsPttChanC]: pttChannelC::enterWaiting numTries == [2] 0416203626|ptt |1|00|[PpsPttChanC]: PTT channel=26, current state=Waiting,event=Timeout, enter next state=Idle 0416203645|ptt |2|00|[PpsPttC]: app2PpsTalkPressed 0416203645|ptt |2|00| [PpsPttC]::ppsProcMsg() starting PTT/Page call 0416203645|ptt |1|00|[PpsPttChanC]: PTT channel=26, current state=Idle,event=KeyTalk, enter next state=Alert 0416203645|ptt |2|00| [PpsPttC]::ppsProcMsg(): MsgPpsTalkPressed channel 26,Ptt AppId 0 0416203645|ptt |2|00| [PpsPttC]::ppsProcMsg(): MsgPpsTalkPressed Mode=wlanModeTimeReleased, Release Interval 30ms, channel 26,Ptt AppId 0416203646|ptt |1|00|[PpsPttChanC]: PTT channel=26, current state=Alert,event=Timeout, enter next state=Transmit 0416203649|ptt |2|00|[PpsPttC]: app2PpsTalkReleased 0416203649|ptt |1|00|[PpsPttChanC]: PTT channel=26, current state=Transmit,event=KeyNone, enter next state=EOTWait 0416203649|ptt |2|00| [PpsPttC]::ppsProcMsg() releasing call 0416203649|ptt |2|00| [PpsPttC]::ppsProcMsg(): MsgPpsTalkReleased Channel 26, Ptt AppId 0 0416203649|ptt |2|00| [PpsPttC]::ppsProcMsg(): MsgPpsTalkReleased Mode=wlanModePttRx Channel 26,Ptt AppId 0 0416203649|ptt |1|00|[PpsPttChanC]: PTT channel=26, current state=EOTWait,event=Timeout, enter next state=EOT 0416203649|ptt |2|00|[PpsPttC]: mediaSess2PpsCallRelease NetCall(0xb09379c0) UsrCall(0xb52c4b20) Reason(3) 0416203649|ptt |2|00| [PpsPttC]::ppsProcMsg(): MsgPpsCallDrop channel 26, reason 3 0416203649|ptt |2|00| [PpsPttC]::ppsProcMsg(): MsgPpsCallDrop Channel 26,Ptt AppId 0 0416203649|ptt |2|00| [PpsPttC]::ppsProcMsg(): MsgPpsCallDrop Mode=wlanModeStandby,Release Interval 650ms, Channel 26, Deleting the Ptt AppId 0 0416203649|ptt |2|00| [PpsPttC]::ppsProcMsg(): MsgPpsCallDrop Mode=wlanModeStandby,Release Interval 650ms Channel 26,After deleting the Ptt AppId 0 0416203649|so |4|00|MsgAppCallRemotePartyGetCmnd: Current Media Session is not in Active List. 0416203649|so |4|00|MsgAppCallRemotePartyGetCmnd: Current Media Session is not in Active List. 0416203649|app1 |4|00|AppHybridC::termLclChg failed to find pCall 0416203649|ptt |1|00|[PpsPttChanC]: PTT channel=26, current state=EOT,event=Timeout, enter next state=Waiting 0416203649|ptt |1|00|[PpsPttChanC]: pttChannelC::enterWaiting numTries == [2] 0416203651|ptt |1|00|[PpsPttChanC]: PTT channel=26, current state=Waiting,event=Timeout, enter next state=Idle
Receiving a Page:
0417083614|ptt |1|00|[PpsPttChanC]: PTT channel=26, current state=Idle,event=ReceiveAlert, enter next state=Receive 0417083614|ptt |2|00|[PpsPttC]: mediaSess2PpsCallAnswer NetCall(0x18f8f38) UsrCall(0x162a2e8) 0417083614|ptt |2|00| [PpsPttC]::ppsProcMsg(): MsgPpsCallAnswer channel 26 0417083615|ptt |1|00|First rx payload est. : 20 0417083615|ptt |1|00|Delta seq 64251 prev sampleCount 0x0 sampleCount 0x149cdcf7 0417083615|ptt |1|00|Delta sampleCount 345824503 expected 160 0417083618|ptt |1|00|First rx payload est. : 90 0417083618|ptt |1|00|Rx payload est. update : 20 0417083623|ptt |1|00|[PpsPttChanC]: PTT channel=26, current state=Receive,event=ReceiveEOT, enter next state=Waiting 0417083623|ptt |1|00|[PpsPttChanC]: pttChannelC::enterWaiting numTries == [2] 0417083623|ptt |2|00|[PpsPttC]:ncas2PpsCallHold Net(0x18f8f38) User(0x162a2e8) 0417083623|ptt |2|00| [PpsPttC]::ppsProcMsg():MsgPpsCallHold channel 26 0417083625|ptt |1|00|[PpsPttChanC]: PTT channel=26, current state=Waiting,event=Timeout, enter next state=Idle 0417083625|ptt |2|00|[PpsPttC]: mediaSess2PpsCallRelease NetCall(0x18f8f38) UsrCall(0x162a2e8) Reason(2) 0417083625|ptt |2|00| [PpsPttC]::ppsProcMsg(): MsgPpsCallDrop channel 26, reason 2
Wireshark:
On a reboot / restart the Phone will leave the Multicast Group:
reboot
Booting a Phone it joins 224.0.1.116
Joining
Transmitting PTT Paging on port 5001
Paging
More detailed technical information can be found in the attached Polycom® UC Software PTT/Group Paging Audio Packet Format Engineering Advisory 70568 document