Asterisk 呼叫语音信箱时，星号中没有声音

我刚开始玩星号。目前它安装在CentOS 7上，Asterisk的版本为13

这是我从Zoiper直接打电话到语音信箱时得到的

-- Executing [8500@demo:2] VoiceMailMain("SIP/2001-00000028", "@demo") in new stack
-- <SIP/2001-00000028> Playing 'vm-login.gsm' (language 'en')
-- <SIP/2001-00000028> Playing 'vm-password.gsm' (language 'en')
-- Incorrect password '' for user '2001' (context = demo)
-- <SIP/2001-00000028> Playing 'vm-incorrect-mailbox.gsm' (language 'en')
   ....

这在voicemail.conf中

[demo]

2001 => Demo Test, demo@127.0.0.1

这是sip.conf中的用户

[general]

port = 5060
bindaddr = xxx.xxx.xxx.xxx
allow=all           
context = bogon-calls ; Send SIP callers that we don't know about here

[2001]

type=friend           ; This device takes and makes calls
username=demo_test         ; Username on device
secret=1234 ; Password for device
host=dynamic          ; This host is not on the same IP addr every time
context=demo      ; Inbound calls from this host go here
mailbox=100   

在

/var/lib/asterisk/sounds/en

中是所有的.gsm文件。

检查防火墙rtp端口（端口列表见rtp.conf）

检查防火墙rtp端口（端口列表见rtp.conf）

[general]

port = 5060
bindaddr = xxx.xxx.xxx.xxx
allow=all           
context = bogon-calls ; Send SIP callers that we don't know about here

[2001]

type=friend           ; This device takes and makes calls
username=demo_test         ; Username on device
secret=1234 ; Password for device
host=dynamic          ; This host is not on the same IP addr every time
context=demo      ; Inbound calls from this host go here
mailbox=100