control center ip pbx telephone system

{"cid":"91210763","title":"2 Power Amplifier Control Port IP PBX Telephone System Broadcast Voice Band 100Hz-16KHz One Button Alarm","imgUrl":"https:\/\/img.chinax.com\/nimg\/d6\/df\/7a10400aff53aaa84792d920c1a9-200x200-1.jpg","attrs":{"Price":"Negotiate","Brand Name":"Yuantong","Model Number":"YT-SDN03\/SIP","Minimum Order Quantity":"100","Delivery Time":"30 Working days","Place of Origin":"Shenzhen Guangdong China","Certification":"CE FCC ROHS ISO9001:2015","Packaging Details":"Carton Box Packaging","Payment Terms":"T\/T","Supply Ability":"1000 Sets Per Month","Broadcast Voice Band":"100Hz-16KHz","Transmission Mode":"Rj45 Port","Fused Fiber Way":"Built-in Fuse Box, The Installation Positions Of Network Switches Can Be Reserved","Voice Band":"300Hz-8KHz","Camera":"None","The Product Name":"Tunel SIP Telephone","SIP Agreement":"1 IP Address CAn Cross Routes","Call Way":"One-Click Call Hands-free Call"}}