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call remain active on FXO port after call hangs up


I have an old analog pbx

I am installing a cucm 8.0

I am installing one voice gateway CME on cisco 1900 router with fxo card

Physical conexion

Analog phone - Old analog pbx  - fxo card on cisco 1900 CME - CUCM- switch cisco  -  IP phone

Communication between Old PBX and CUCM is working but I have a problem whend I hangs up

When  I made a call, it work,  then at  the  end of call I hangs up but I  observ that the calls remain active in the voice gateway

see below

Voice-GW#show voice call status

CallID     CID  ccVdb      Port        Slot/DSP:Ch  Called #   Codec    MLPP Dial-peers

0x6        11E7 0x29742C9C 0/2/0            No DSP *5000       None      500/0

0x14       11F8 0x29745FC8 0/2/2            No DSP *5000       None      500/0

0x1C       1203 0x2974762C 0/2/3            No DSP *5000       None      500/0

3 active calls found


Is it normal ?

Why the call remain active in voice call status after hangs up ?

How can I do to remove call on active call list after hangs up ?


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