[c-nsp] Channelized DS3 over SM fiber handoff

Troy Beisigl troy at i2bnetworks.com
Fri May 1 21:16:39 EDT 2009

Maybe they delivered a channelized OC3? I know that is an actual  
product, but have never seen a DS3 as fiber handoff.

Troy Beisigl

Sent from my iPhone

On May 1, 2009, at 6:05 PM, Seth Mattinen <sethm at rollernet.us> wrote:

> Michael Ulitskiy wrote:
>> Hello,
>> We will need to terminate channelized DS3 circuit in 7200VXR router.
>> The problem is that DS3 is given to us by telco (Verizon) as a  
>> single-mode fiber.
>> I have no experience with this kind of setup and actually limited  
>> experience with DS3 circuits.
>> Has anybody done this before? How it's usually done?
>> Is there a DS3 PA with fiber interface for 7200 routers (I don't  
>> see any) or I should use
>> a media converter with PA-MC-T3? If so, can you recommend one?
>> It seems that many media converters use proprietary DS3 encoding  
>> scheme and must be used in pairs
>> (or at least I've been told so), but telco is unable to give us any  
>> recommendation on how
>> we should terminate it on our end.
>> If anyone could share the experience on terminating DS3 over fiber  
>> handoff from Verizon, East Coast,
>> I'd greatly appreciate it. Any pointers to appropriate  
>> documentation/tutorials/howtos/etc are also very welcome.
>> Thanks a lot,
> I've never seen anyone do that before with a DS3. Maybe they gave you
> Ethernet?
> ~Seth
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