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choosing proper WAN interface card...need help.

Alexander Demin
Level 1
Level 1

Hello!

I've got a 3845 ISR at the edge of my network.

ISP gives me E1, interfaced with V.35.

What network card/module and cable I should use for my ISR to connect E1 via v.35 interface on the PE hardware?

At first glance I look for WIC-1T or HWIC-4T, or HWIC-4A/S.

What for cable, I suppose that ISP is DCE, while my (H)WIC is DTE, so the cable will be CAB-SS-V35MT or

CAB-SS-V35FC ?

Thanks, WBR

Alex

DAO21-RIPE
2 Accepted Solutions

Accepted Solutions

Edison Ortiz
Hall of Fame
Hall of Fame

WIC-1T is End Of Sale and its replacement is HWIC-1T1

You will need a DTE cable CAB-SS-V35MT

http://www.cisco.com/en/US/prod/collateral/modules/ps5949/datasheet_c78-491363.html

View solution in original post

The E1 is handled by the external device.

Your router will only care about the serial connection from that device and the HWIC-1T will provide this for you.

As Paolo indicated, if you want to terminate the E1 on the router, then you need an E1 CSU/DSU,

http://www.cisco.com/en/US/prod/collateral/modules/ps5949/product_data_sheet0900aecd80710c77.html , not a serial interface as your original request indicates..

View solution in original post

4 Replies 4

Edison Ortiz
Hall of Fame
Hall of Fame

WIC-1T is End Of Sale and its replacement is HWIC-1T1

You will need a DTE cable CAB-SS-V35MT

http://www.cisco.com/en/US/prod/collateral/modules/ps5949/datasheet_c78-491363.html

Sorry,

Although HWIC-1T support synchronous maximum speed - 8 Mbps and V.35 serial protocol, I'm not

sure about handling E1 stream (2,048 Mbps, while T1 - 1,544 Mbps). ?

DAO21-RIPE

The E1 is handled by the external device.

Your router will only care about the serial connection from that device and the HWIC-1T will provide this for you.

As Paolo indicated, if you want to terminate the E1 on the router, then you need an E1 CSU/DSU,

http://www.cisco.com/en/US/prod/collateral/modules/ps5949/product_data_sheet0900aecd80710c77.html , not a serial interface as your original request indicates..

paolo bevilacqua
Hall of Fame
Hall of Fame

Ask ISP to eliminate the V35 converter.

Thsi way you will have one device less, and will be able to monitor the real performances of the E1 circuit.

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