V35 and G.703

[marco carini]

I would like to know what are the differences between V.35 and G.703
interfaces. Is there anyone who can help me to understand when V.35
interface can be used and when G.703 is preferred?

Thanks in advance for your kind answer.
--
The Telecom Digest is currently mostly robomoderated. Please mail
messages to edi...@telecom-digest.org.

[Matt]

Where aren't they different.

V.35 simply stated has differential signaling on the datapath with
separate clocks (clocks are also differentially signalled).. it has
standard modem control signals (CTS,RTS etc...) which use single
end-ended signalling..
standard connector is a winchester-connector. Standard (V.35) has
been withdrawn by the ITU, so implementations are loose. Typical
maximum datarate for V.35 drivers is 10 MHz.

V.35 is used between a router and CSU/DSU, when the router doesn't
have this function integrated.

G.703 defines standard telecom electrical interfaces including such
interfaces as DS0, DS1, DS3, E1 and E3. Interfaces use different line
codings (B8ZS, HDB3)and different medias for transport (coax, UTP,
STP).

G.703 would be the interface which is on the "network" side of a
CSU/DSU.

The diagrams below shows two possible implementations..

WAN --- DS1 ----- CSU/DSU ----- V.35 ----- Router ---- 802.3 --- LAN

WAN --- DS1 ----- CSU/DSU/Router ---- 802.3 --- LAN

WAN and LAN are networks
DS1, V.35 and 802.3 are physical layers.
CSU/DSU and Router are communications equipment.

Matt

marco....@snamprogetti.eni.it (marco carini) wrote in message news:<8759c9f6.0111...@posting.google.com>...

[vtan...@gmail.com]

On Tuesday, November 6, 2001 at 1:28:39 AM UTC+8, Matt wrote:

> marco....@snamprogetti.eni.it (marco carini) wrote in message
> news:<8759c9f6.0111...@posting.google.com>...
> >
> > I would like to know what are the differences between V.35 and
> > G.703 interfaces. Is there anyone who can help me to understand
> > when V.35 interface can be used and when G.703 is preferred?
> >
> > Thanks in advance for your kind answer.
> > --
> > The Telecom Digest is currently mostly robomoderated. Please mail

> > messages to [redacted]

>
> Where aren't they different.
>
> V.35 simply stated has differential signaling on the datapath with
> separate clocks (clocks are also differentially signalled).. it has
> standard modem control signals (CTS,RTS etc...) which use single
> end-ended signalling..
> standard connector is a winchester-connector. Standard (V.35) has
> been withdrawn by the ITU, so implementations are loose. Typical
> maximum datarate for V.35 drivers is 10 MHz.
>
> V.35 is used between a router and CSU/DSU, when the router doesn't
> have this function integrated.
>
> G.703 defines standard telecom electrical interfaces including such
> interfaces as DS0, DS1, DS3, E1 and E3. Interfaces use different line
> codings (B8ZS, HDB3)and different medias for transport (coax, UTP,
> STP).
>
> G.703 would be the interface which is on the "network" side of a
> CSU/DSU.
>
> The diagrams below shows two possible implementations..
>
> WAN --- DS1 ----- CSU/DSU ----- V.35 ----- Router ---- 802.3 --- LAN
>
> WAN --- DS1 ----- CSU/DSU/Router ---- 802.3 --- LAN
>
> WAN and LAN are networks
> DS1, V.35 and 802.3 are physical layers.
> CSU/DSU and Router are communications equipment.
>
> Matt

Hi, Can you tell me where i can buy G.703/G.704 to V.35 (Winchester
connector) interface converter? I know many manufacturers have
stopped production. I am looking for those that [are] still shipping.

Thank you.
Victor


***** Moderator's Note *****

I'm not sure if G.703/4 were ever used outside the "V.35" interface,
so I'm not sure what you're asking, but I'll publish this in hopes
that someone else can help you.

Bill Horne
Moderator

[Stephen Hope]

On Tue, 20 Mar 2018 03:35:45 -0700 (PDT), vtan...@gmail.com wrote:

>On Tuesday, November 6, 2001 at 1:28:39 AM UTC+8, Matt wrote:
>
>> marco....@snamprogetti.eni.it (marco carini) wrote in message
>> news:<8759c9f6.0111...@posting.google.com>...
>> >
>> > I would like to know what are the differences between V.35 and
>> > G.703 interfaces. Is there anyone who can help me to understand
>> > when V.35 interface can be used and when G.703 is preferred?
>> >
>> > Thanks in advance for your kind answer.
>> > --
>> > The Telecom Digest is currently mostly robomoderated. Please mail
>> > messages to [redacted]
>>
>> Where aren't they different.
>>
>> V.35 simply stated has differential signaling on the datapath with
>> separate clocks (clocks are also differentially signalled).. it has
>> standard modem control signals (CTS,RTS etc...) which use single
>> end-ended signalling.. standard connector is a winchester

G.703 2 Mbps is the standard delivery for an ISDN30 voice circuit in
UK & Europe (and other places outside US + Japan where those are still
around).

V.35 is 1 of a set of serial interfaces that can sort of interwork
with cable adaptors and some compromises about clocking if you cannot
find V.35 specific interfaces - X.21 in the UK, but RS422 as well.

Most relatively recent equipment designed for a serial interface such
as a Cisco router have had flexible multifunction serial interfaces
for a long time - typically they support RS422, V.35, X.21 and DTE or
DCE setup - you pick the one you want by strapping different pins
together within a cable.


--
Stephen