[c-nsp] Channelized DS3 over SM fiber handoff

Bill Blackford BBlackford at nwresd.k12.or.us
Fri May 1 23:37:41 EDT 2009

I certainly haven't seen it all, but I would speculate that you have a sonnet shelf terminated by a Fujistsu Flashwave or some other device and your handoff is dual coax clear channel. You may need to extend that part?

From: cisco-nsp-bounces at puck.nether.net [cisco-nsp-bounces at puck.nether.net] On Behalf Of Seth Mattinen [sethm at rollernet.us]
Sent: Friday, May 01, 2009 6:05 PM
To: Michael Ulitskiy
Cc: cisco-nsp at puck.nether.net
Subject: Re: [c-nsp] Channelized DS3 over SM fiber handoff

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

cisco-nsp mailing list  cisco-nsp at puck.nether.net
archive at http://puck.nether.net/pipermail/cisco-nsp/

More information about the cisco-nsp mailing list