/ http://www.slideshare.net/images/logo.gif / 際際滷Share feed for 際際滷shows by User: zhulizhong https://cdn.slidesharecdn.com/profile-photo-zhulizhong-48x48.jpg?cb=1656194116 asterisk card, pri, pstn, bri, ss7, gateway, GSM gateway, PRI devices, elastix. Specialties: asterisk card, pri, pstn, bri, ss7, gateway, GSM gateway, PRI devices. http://www.voipviews.com