Re: G.703 -> V.35 Compatibility

wow.............such a long list for this small issue :)

You have 2 options:

Options#1: On your A end remove the V.35 convertor and hook the E1 direct to
your router.
This is very clean method as you are not introducing additional fault points
(removes 2 modems).

The only thing I can think of about this option which can not apply to your
perticular situation as the distance between your end customer site and the
Tel Exchange may be problem to drive the E1 signals. If it is within
80-100/max150 meters then you can do this excercise else option#2.

Option# 2:
Just convert E1 to V.35 at your E1 router end. Of course u have 2 additional
fault points as compared to Option1 but it will work for sure.

use any converter. I have used heaps of RAD RIC-E1 converter. Make sure both
end has the same modem else you may also run into another problem.

http://www.rad.com/10/E1_Serial_and_Ethernet_Interface_Converter/3213/

Other things:
1. Don't forget to check your router to convertor/modem cable pinouts. Ask
vendor for pinouts. and match them with Cisco cable.
2. Make sure your clocking is like this. There are 2 providers so their are
2 network clocks.

router------modem--------|muxAtProvider|--------PDH/SDH------|muxAtProviderB|----------modem---------router

that would be a bit messy as you may have 2 internal clocks in the end to
end circuit. Clock should be always one.
THIS IS VERY CRUITIAL. I think you should monitor the circuits for atleast 1
weeks before paying these teleco's. There will be a lot of errors.

HTH.

-frog

On Tue, Apr 7, 2009 at 10:52 PM, Andy Reid <ccie_at_reid.it> wrote:

> Hi Ranjith,
>
> Yes they will work, however, could you confirm what cable you are using
> on the router with the V.35 interface.
> The serial adapter cables determine the mode and interface type, for
> example it will become a DTE when a DTE cable is connected to it. To use
> the port as a DCE interface, you must set the clock rate and connect a
> DCE cable.
>
> Perform a "show controller slot/port" on the router with the V.35
> interface, this will show you what type of cable is physically connected.
>
> Note that if a DTE cable is connected to the port with a clock rate set,
> the DTE ignores the clock rate and uses the external clock signal that
> is sent from the remote DCE. The maximum recommended rate for a V.35
> serial interface is 2048Kbps with a maximum distance of 25 feet or 8
> meters.
>
> regards Andy
>
> Ranjith Samuel wrote:
> > Thanks for your reply Jerry.
> >
> >
> >
> > So do we need a G.703 <-> V.35 conveter at either end for this circuit to
> > work?? Wont G.703 interface talk to V.35 interface without the
> convereter?
> >
> >
> >
> > Thanks,
> >
> >
> >
> > Ranjith Samuel
> >
> >
> >> Subject: RE: G.703 -> V.35 Compatibility
> >> Date: Tue, 7 Apr 2009 14:10:41 +0800
> >> From: jerry.du_at_accenture.com
> >> To: ranjith_samuel_at_hotmail.com; ccielab_at_groupstudy.com
> >>
> >> Hi Ranjith,
> >>
> >> Yes, G.703 interface is able to work with v.35 in another end. The
> >> problem you meet would be something wrong in V.35 converter, I guess.
> >>
> >> Unframed setting in v.35 converter should be correct, but there are
> >> should some other switches in converter. You may check with your ISP for
> >> the v.35 converter setting.
> >>
> >> There are no special setting in router end, you would treat it as a
> >> normal link and apply the configuration what it should be.
> >>
> >>
> >> Regards,
> >> Jerry
> >>
> >>
> >> -----Original Message-----
> >> From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf Of
> >> Ranjith Samuel
> >> Sent: Tuesday, April 07, 2009 1:57 PM
> >> To: ccielab_at_groupstudy.com
> >> Subject: G.703 -> V.35 Compatibility
> >>
> >> Dear Experts,
> >>
> >>
> >>
> >> I've a query that I am sure that you will be able to help me out with.
> >>
> >>
> >>
> >> I have a leased line between my two of my offices each side served by a
> >> different Service Provider with an interconnect between them. I have
> >> explained
> >> the setup Below
> >>
> >>
> >>
> >> Point A :
> >>
> >>
> >>
> >> L2 Protocol : HDLC
> >>
> >> Interface Type : E1 Controller G.703
> >>
> >>
> >>
> >>
> >>
> >> Point B :
> >>
> >>
> >>
> >> L2 Protocol : HDLC
> >>
> >> Interface Type : E1 Controller V.35
> >>
> >>
> >>
> >> The issue is I cat get both sides to comunicate. I have tried the
> >> following
> >> combintations in terms of framing
> >>
> >>
> >>
> >> 1) Unframed
> >>
> >> 2) 1-31 Time slots
> >>
> >>
> >>
> >> I also tried generating a network loop from the E1 Controller @ point A
> >> and
> >> this is seen by the remote router. End to End testing has been done on
> >> the
> >> circuit and there are no errors.
> >>
> >>
> >>
> >> The Symptom is that the Serial Interface comes up but line protocol is
> >> down. I
> >> tried all corrective action on the cisco website.
> >>
> >>
> >>
> >> I would also like to mention that when the service provider plus in his
> >> router
> >> with a G.703 interface in point B, the circuit comes up with a
> >> channelised
> >> E1.
> >>
> >>
> >>
> >> Can someone tell if both interfaces has to be of the same type for it to
> >> talk
> >> , or can G.703 talk to V.35 ?
> >>
> >>
> >>
> >> I would reallyy appreciate it if anyone can give me a lead or clue as to
> >> what
> >> I might be doing wrong.
> >>
> >>
> >>
> >> Regards,
> >>
> >>
> >>
> >> Ranjith Samuel.
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
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Received on Wed Apr 08 2009 - 01:11:47 ART