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New Member

Switching Frame Relay Providers

I am getting ready to switch Frame Relay providers. I have three sites, each with a CISCO 1750 router. The Head End also has a PIX 506. Each router has a WIC 1DSU T1 interface card installed in SLOT0.

Currently, the circuit speed at the head end is 128k and each remote location has a 64k circuit. When I change over the Head End will stay the same but the two remote sites will go to 56k. My Service Provider swears this is not a switched 56k circuit but a dedicated 56k circuit.

My questions are:

1. Do I need to get the WIC 1DSU 56k4 interface card for the two remote loacations.

2. If I do need the card, can I just drop them in SLOT1.

3. I do have to change the DLCI's on the remote routers as well but that's not really a problem. I do wonder about the service module timeslots however. They currently read:

service-module t1 timeslots 1-2

A very knowledgable individual told me they will need to be changed to:

service-module t1 timeslots 1-2 speed 56

Thanks in Advance


New Member

Re: Switching Frame Relay Providers


I believe that service-module t1 timeslots 1-2 is configured on the HUB router (Head End) ... on the remote it may say.. service-module t1 timeslots x.. on that command you can add the speed 56 and you will try to establish a connection at 56k.. I think you can use the same wic-cards.. As long as you match the speed.. You will be up and running..

New Member

Re: Switching Frame Relay Providers

Does that mean I only need to reconfigure the timeslots on the Head End then?

Cisco Employee

Re: Switching Frame Relay Providers

Actually, you need to find out from the new service provider if the dedicated 56k lines are actually DDS lines, or simply a 56k channel on a T1 circuit.

If they are 56k DDS lines then you do need the other WIC type. A WIC-1DSU-T1 will not work with a 56k DDS circuit.

New Member

Re: Switching Frame Relay Providers

But, a 56k channel on a T1 will work then? There seems to be much confusion about this when I talk to my service provider and I really need to nail them down on this pronto.

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