Differences

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--- networking:cisco-1921 [29/03/2026 12:40] – [Background] andrew
+++ networking:cisco-1921 [25/06/2026 11:05] (current) – [Optical Network Terminator] andrew
@@ Line 7: / Line 7: @@
 Replaces [[cisco-1841|Cisco ADSL & 1841 router]] as this is a Fast Ethernet only router, the 1921 is a similar router but with Ge0/0 and Ge0/1 interfaces and two hwic slots. I have a EHWIC-1GE-SFP-CU card as well because in the foreseeable future I may need to bring the internet in from the ISP ONT some distance away, so a utp to fibre next to the ONT would link to the WIC SFP port.
-Also, there is a USB port in addition to the serial connector, this implements a usb to serial converter internally, it shows up as ''/dev/ttyACM0''.
+Also, there is a mini USB port in addition to the serial connector, this implements a usb to serial converter internally, it shows up as ''/dev/ttyACM0''. The original "A" USB socket is, I believe, for plugging in a memory stick for copying firmware etc. I have never used this.
@@ Line 313: / Line 313: @@
 {{:networking:450px-fttp-ont-pon.jpg?100|}}
+White:- Power 12v \\
+Yellow:- Cat6 UTP \\
+Green:- Single fibre on SC connector \\
@@ Line 319: / Line 323: @@
 Getting more off-topic, but maybe of interest.
-{{networking:gpon-switch.jpg?200 |}}
+{{networking:gpon-switch.jpg?400 |Alcatel Lucent}}
-{{ :networking:fx-16-gpon.jpg?200 |}}
+{{ networking:fx-16-gpon.jpg?400|}}
 {{ :networking:nokia_7360_data_sheet_en.pdf |}}