Outbound route <SIP/6002-0000004a> Playing 'ss-noservice.gs

How can i solve this

Using SIP RTP TOS bits 184 == Using SIP RTP CoS mark 5 -- Executing [8668884@from-zaptel:1] Set("SIP/6002-00000050", "DID=8668884") in new stack -- Executing [8668884@from-zaptel:2] Goto("SIP/6002-00000050", "s,1") in new stack -- Goto (from-zaptel,s,1) -- Executing [s@from-zaptel:1] NoOp("SIP/6002-00000050", "Entering from-dahdi with DID == 8668884") in new stack -- Executing [s@from-zaptel:2] Ringing("SIP/6002-00000050", "") in new stack -- Executing [s@from-zaptel:3] Set("SIP/6002-00000050", "DID=8668884") in new stack -- Executing [s@from-zaptel:4] NoOp("SIP/6002-00000050", "DID is now 8668884") in new stack -- Executing [s@from-zaptel:5] GotoIf("SIP/6002-00000050", "0?dahdiok:checkzap") in new stack -- Goto (from-zaptel,s,6) -- Executing [s@from-zaptel:6] GotoIf("SIP/6002-00000050", "0?zapok:neither") in new stack -- Goto (from-zaptel,s,7) -- Executing [s@from-zaptel:7] Goto("SIP/6002-00000050", "from-pstn,8668884,1") in new stack -- Goto (from-pstn,8668884,1) -- Executing [8668884@from-pstn:1] Set("SIP/6002-00000050", "__FROM_DID=8668884") in new stack -- Executing [8668884@from-pstn:2] NoOp("SIP/6002-00000050", "Received an unknown call with DID set to 8668884") in new stack -- Executing [8668884@from-pstn:3] Goto("SIP/6002-00000050", "s,a2") in new stack

You need to ask the person or organisation that wrote the dialplan.

Show the full CLI we need to see what happen after

[Executing [8668884@from-pstn:3] Goto(“SIP/6002-00000050”, “s,a2”) in new stack