pjsip自动外呼服务搭建流程-centos 7.2

1、OS环境： 服务器：CentOS Linux release 7.2.1511 (Core) 声卡 ：   [root@localhost ~]# lspci |grep -i audio 00:1b.0 Audio device: Intel Corporation 7 Series/C210 Series Chipset Family High Definition Audio Cont

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