Cisco CP-8851-K9 VoIP Phone CP-7800 which is what separates it

which is what separates it from the otherwise-identical Network Advantage C9300-48T-A

It installs into the 4900M’s half-card expansion slot to provide flexible Gigabit Ethernet server access

IEEE 1588 PTP v2

[shortdesc] Firewall

network adapter

Cisco CP-8851-K9 VoIP Phone CP-7800 which is what separates it[shortdesc] VoIP phone SIP RTCP RTP SRTP SDP 5 lines Power Adapter Sold Separately [ shortdesc] [properties] Properties CP 8851 K9 Description Cisco IP Phone 8851, Charcoal Product Family Cisco IP Phone 8800 Series Product Type IP Phones Graphical display The 800 480, 24 bit color, 5 in. WVGA display provides scrollable access to calling features and textbased XML applications. Audio Automatic Gain Control Comfort Noise Generation Silence Suppression