medium voice over ip phone system

{"cid":"91223307","title":"Cisco IP Phone 8851-W-K9= : Noise Cancellation , SIP Compatible & PoE Support","imgUrl":"https:\/\/img.chinax.com\/nimg\/48\/66\/2913df5481b4fba65f290093d064-200x200-1.jpg","attrs":{"Brand Name":"Cisco","Model Number":"CP-8851-W-K9=","Resolution":"800 x 480 pixels","Call Transfer":"Yes","Wireless Capability":"802.11a\/b\/g\/n\/ac","Power Over Ethernet":"Yes","Call Waiting":"Yes","Display Type":"LCD","Compatibility":"Cisco Unified Communications Manager","Speed Dial":"Yes","Type":"Unified IP Conf Phone","Support":"IMEI Change","Sip Lines":"5","Call History":"100 entries","Speakerphone":"Yes","Bluetooth Support":"Yes"}}

{"cid":"91159203","title":"CP-8851-K9 USB Powered H.323 Interoperability IP Telephony Phone CP-8851-K9","imgUrl":"https:\/\/img.chinax.com\/nimg\/f7\/1c\/9c2adb018af6fe81dd2c585dce89-200x200-1.jpg","attrs":{"Brand Name":"Cisco CP-8851-K9","Model Number":"CP-8851-K9","Delivery Time":"2-3 days","Place of Origin":"china","Certification":"CE CP-8851-K9","Expandability":"Bluetooth, USB, Wi-Fi, Headset Jack","Interoperability":"SIP, SCCP, MGCP, H.323","Connectivity":"Ethernet 10\/100\/1000","Display":"Color LCD","Voice Codecs":"G.711, G.729a, G.722, G.722.1, G.722.1C, G.729ab, ILBC, ISAC, OPUS","Power":"802.3af PoE, USB, Local Power Supply","Model":"Cisco IP Phone","Warranty":"1 Year"}}