11-21-2003 07:48 AM - edited 03-02-2019 11:54 AM
Hello
I am using 3745 router with 2 port Channelized E1 module with RAD HTU E1 CSU for Channelized E1 connectivity. I am using Cisco PRI-E1 cable.
The problem is there is a indication of LOC ( it indicates the router CSU connectivity ) and it is showing that connectivity between router and CSU is not OK. I have changed E1 cables but nothing happening, I need to cross the Tx, Rx signals between router and CSU. Then it works.
Which cable is proper for this?
11-21-2003 09:46 AM
Hello,
here are the Cisco part numbers, depending on what connector the CSU has):
CAB-E1-RJ45BNC
E1 Cable RJ-45 to Dual BNC (Unbalanced)
CAB-E1-RJ45TWIN
E1 Cable RJ-45 to Twinax (Balanced)
Check out the following link:
Before you change the cable though, try to toggle the crc4/no crc-4 on your E1 controller, there might be a problem with that:
Router#conf t
Router(config)#controller e1
Router(config-cont)#framing no-crc4
Router(config-cont)#shut
Router(config-cont)#no shut
or (depending on what you have configured originally):
Router#conf t
Router(config)#controller e1
Router(config-cont)#framing crc4
Router(config-cont)#shut
Router(config-cont)#no shut
You also might want to try to power down/power up your CSU.
Regards,
Georg
11-28-2003 04:46 AM
I thik it not a cable related issuse if ur getting LOC on the modem that means that the the RAD htu E1 (G 703) is not getting the signal from the exchange end
11-28-2003 09:22 AM
I am getting LOC on V35 not on G703.
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