PA-4T+ supports E1 Link

Unanswered Question
Jun 9th, 2009

I have a 6500 switch with Flex-wan module. PA-2FE-FX and PA-4T+ these are the port adapters i used on the Flex-wan. I have a new 2mb E1 link now can i terminate this E1 link on the PA-4T+ adaptor.



I have this problem too.
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Giuseppe Larosa Tue, 06/09/2009 - 07:38

Hello Jacob,

the original PA 4T+ datasheet says yes

you should be able to select E1 mode on a per port basis

>> The four-port adapter (PA-4T+) provides four synchronous serial ports. Each port supports full-duplex operations at T1 and E1 speeds

So there should be a command to tell this to the device.

Be aware that some limitations on flexwan can apply

Hope to help


Jacob Samuel Tue, 06/09/2009 - 21:51

Dear Giusee,

Thanks for the update, i updated customer that we need another module for this but still i had soome doubt thats why i checked, i also found the data sheet. It is there on the benefits list -

"Supports four full-duplex T1/E1 connections or a single full-duplex E2 connection ".

But one more thing Giusee, the E1 needs an interface of RJ45 type, how can we connect this to the synch serial type interface? do we need any converter or i can ask the Telco to provide it on serial interface type?

Also how can we make it confirm?



Paolo Bevilacqua Tue, 06/09/2009 - 21:59

Yes, you need an interface converter with this PA. The alternative, is that you get a native E1 PA, and use no converter.

Jacob Samuel Tue, 06/09/2009 - 22:02


Thanks for the update. can you please update what type of converter we need for this?



Paolo Bevilacqua Tue, 06/09/2009 - 22:07

It's called E1 to V.35 (or other serial type) converter. It's a generic box used in quantity by telcos manufactured by many brands.

When used, you will not be able to see the true circuit performances in term of errors, and you will have an additional device to power and take space in the rack, together with the burden of thick serial cables. That is why accurate installations do not use converters.

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