The channelized E1 card can work as you describe. It won't automatically be
able to identify the timeslots, you will need to configure them based on how
the Telco maps the two circuits. Once configured it will look like you have
two serial interfaces, each mapped to the appropriate customer location.
One thing it will not do is act as a actual digital cross connect. You can
not map channels through it (i.e. take channel A and map it to channel B),
it will only terminate channels. It also does not have the ability to act
as a add/drop CSU/DSU. Any channels you want pulled off for other
applications, need to be done before it gets to the router.
David
-----Original Message-----
From: Vinod Anthony Joseph Cherunni [mailto:vac@dsqworld.com]
Sent: Wednesday, December 27, 2000 4:09 AM
To: cisco-nsp@puck.nether.net
Subject: [nsp] Chanelized E1
Dear All,
Once again I'm back with a question in my mind. In the following scenario,
wherein a customer has the following requirement
1. He needs a 1 Mbps circuit to location A (Circuit 1).
2. Also a 512 Kbps circuit to location B (Circuit 2).
Now if he opts for a 2 Mbps E1 stream as the last mile to the service
provider with a RAD Time division Mux for mapping the appropriate timeslots
to the correct destination. In our case assume he maps 16 slots for circuit
1 & 8 slots for circuit 2. Now at my end (Service provider end) I plan to us
a Cisco 3662 with a channelized E1 card (NM-2CE1B), Will the router be able
to identify the timeslots from the customer & route to the appropriate
destination, Since the E1 card can be configured with IP interfaces which
has been created by grouping E1 channels. Can the E1 card be looked at as a
Digital cross connect.
Kindly advice.
With warm regards,
Vinod.
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