Are you using the popular Cisco 1000BASE-T SFP-GLC-T? In fact, the GLC-T has been aounced end of sale and end of life. The best replacement is the GLC-TE. GLC-T is a fiber optic transceiver module via Category 5 copper lines, Cisco GLC-T fiber transceivers provide 1Gbps data transfer and it provides full-duplex Gigabit Etheet coectivity to high-end workstations and between wiring closets over existing copper network infrastructure. GLC-T SFP is compliant to IEEE 802.3 and its dimension is 0.6 in x 2.8 in x 0.6 in. GLC-T is with plug in module type Mini-GBIC. SFP-GE-T is Cisco fiber optic transceiver that works with 1000BASE-T. SFP-GE-T is with extended working temperature and it is with DOM support. SFP-GE-T is small form transceiver with RJ45 coector interface and it is with spring latch for high density applications. Difference between GLC-T and SFP-GE-T GLC-T, Cisco compatible copper SFP transceiver module for Category 5 copper wire, RJ-45 coector. SFP-GE-T, 1000BASE-T SFP transceiver module for Category 5 copper wire, extended operating temperature range, RJ-45 coector Cisco GLC-T fiber transceivers provide 1Gbps data transfer and it provides full-duplex Gigabit E

Lea the common and unique features among the three models of the Cisco IP Phone 8800 Series: CP-8841 vs. CP-8851 vs. CP-8861 Features Screen 800 x 480 WVGA (5”) 800 x 480 WVGA (5”) 800 x 480 WVGA (5”) Touch Screen No No No Etheet Switch 10/100/1000 Mbps 10/100/1000 Mbps 10/100/1000 Mbps Programmable Line Keys 5 5 5 Programmable Soft Keys 4 4 4 Fixed Features Keys 12 12 12 Mobile Remote Access without a VPN client through Cisco Expressway Yes Yes Yes Handsfree Yes Yes Yes Speakerphone Yes Yes Yes Signaling Protocols SIP SIP, Bluetooth SIP, Bluetooth 802-3AF Yes Yes Yes Wi-Fi — — 802.11a/b/g/n/ac Cisco IntelligentProximity for Mobile Voice Yes Yes Yes USB Charging — 1 Port 2 Ports Cisco Power No No No DHCP Yes Yes Yes Codecs G.711a, G.711u, G.729a, G.729b, G.729ab, iSACand Inteet Low Bitrate Codec (iLBC) G.711a, G.711u