I have NM-2CE1T1-PRI module card newly installed in our 3660 routers in some of the sites.
I tried to figure out, what type of interface I will use if the service provider will provide me a couple of E1's to connect to the other sites.
I am quite a little bit confuse regarding the connectors between the RJ48 and RJ45. Is this two connectors are the same pins or size? What are the pinouts if you want to use the channelized E1's for data and what are the interface I will use? Do I have to connect the E1 link from the frame directly to NM-2CE1T1-PRI module with RJ45 or RJ48 or there is a special interface provided by cisco.
Please I need your expertise ASAP if you can and I really appreciate it.
Officially :yes the RJ-48 is different from RJ-45.They both have 8-pins, the difference is that RJ-48 is slightly bigger.You will know the difference only when you take both the connectors in hands, otherwise both looks same.
In my country, the PRI line is simply a pair of 2 wires.One pair for TX and one for RX.
1,2 are Rx and 4,5 are TX.Rest 3,6,7,8 are not used.
You just need to crimp it.Dont know in ur case.
Unofficial TIP: You can connect the RJ-45 male to RJ-48 female and it too works.
Thanks for the reply. I tried to insert the RJ45 connector to one of the E1's port and it seems the RJ45 is bigger than the port but I did not try it again. I try to purchase the RJ48 in one of the shops and he told me that RJ48 and RJ45 are the same that's why I asked for help for the confirmation.
One thing more if the Service Provider will give me an E1, should I connect the wire directly to the E1 with RJ45 or RJ48 to the router or Do I need a special connectors.
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