[asterisk-users] Help with E1s

[Rizwan Hisham]

 span=4,4,1,esf,b8zs

What does this statement do. What do different values separated by comma
mean. Also the last option "b8zs", i read about it that it is only used in
T1s, so if i use E1 then what should i put there. I read somewhere that E1
uses HDB3 instead of B8ZS. Is this write?

On Tue, Jun 3, 2008 at 2:42 AM, Steve Totaro <stotaro at totarotechnologies.com>
wrote:

> On Mon, Jun 2, 2008 at 4:30 PM, Tilghman Lesher
> <tilghman at mail.jeffandtilghman.com> wrote:
> > On Monday 02 June 2008 15:07, Rizwan Hisham wrote:
> >> Thanx a lot Tzafrir and Tlighman. But i need to clear some more concepts
> >> before starting to implement anything.
> >>
> >> In ATFOT i read about configuring an analogue pstn line, by configuring
> >> /etc/zaptel.conf and some other things in etc/asterisk/zapata.conf, that
> >> was just one line. if I configure the E1 card then ,correct me if im
> wrong,
> >> i will have similar 32 channels like that single pstn line in TDM card,
> The
> >> only difference will be the number of channels?
> >
> > No.  As I said before, you will have 30 channels of voice.  Not 32.
> >
> >> what are b & d channels and whats the difference between them?
> >
> > Bearer channels can transport voice.  The data channel is used
> exclusively
> > for signalling.
> >
> >> Tilghman..
> >> Can a 1.2GH machine handle 62 CONCURRENT zap calls?
> >
> > That would be 60, not 62.  Remember, there are 2 D channels, one for
> > each circuit.  I provided the 1.2GHz speed as an example of the minimum
> > you will probably need, as long as you do no transcoding, conferencing,
> or
> > other tasks which would up the CPU load.  If you do either of those tasks
> > (or the myriad of other tasks, like running a database on the same
> machine),
> > you will need more CPU.  And given that a 1.2GHz machine is now generally
> > more expensive than most new machines (which are considerably faster), it
> > would probably be a wise choice to get the fastest machine for your
> money.
> > I don't know what exactly is the sweet point on processors this month,
> but
> > it's probably around 2.2GHz dual core.
> >
> >> If you can provide me a good source where i can find all the necessary
> >> info then it will be more easier and faster for me.
> >
> > Froogle?  Pricewatch?
> >
> > --
> > Tilghman
> >
>
> Configs for a live four port Digium T1 card.  genzaptelconf took care
> of it for me, Sangoma has an install script that generates these files
> as well.  Intel(R) Pentium(R) 4 CPU 2.80GHz.
>
> /etc/zaptel.conf
> # Autogenerated by ./genzaptelconf -- do not hand edit
> # Zaptel Configuration File
> #
> # This file is parsed by the Zaptel Configurator, ztcfg
> #
>
> # It must be in the module loading order
>
>
> # Span 1: TE4/0/1 "T4XXP (PCI) Card 0 Span 1" B8ZS/ESF
> span=1,1,1,esf,b8zs
> # termtype: te
> bchan=1-23
> dchan=24
>
> # Span 2: TE4/0/2 "T4XXP (PCI) Card 0 Span 2" B8ZS/ESF RED
> span=2,2,1,esf,b8zs
> # termtype: te
> bchan=25-47
> dchan=48
>
> # Span 3: TE4/0/3 "T4XXP (PCI) Card 0 Span 3" B8ZS/ESF RED
> span=3,3,1,esf,b8zs
> # termtype: te
> bchan=49-71
> dchan=72
>
> # Span 4: TE4/0/4 "T4XXP (PCI) Card 0 Span 4" B8ZS/ESF RED
> span=4,4,1,esf,b8zs
> # termtype: te
> bchan=73-95
> dchan=96
>
> # Global data
>
> loadzone        = us
> defaultzone     = us
>
>
> /etc/asterisk/zapata.conf
>
> ; Autogenerated by ./genzaptelconf -- do not hand edit
> ; Zaptel Channels Configurations (zapata.conf)
> ;
> ; This is not intended to be a complete zapata.conf. Rather, it is intended
> ; to be #include-d by /etc/zapata.conf that will include the global
> settings
> ;
>
> ; Span 1: TE4/0/1 "T4XXP (PCI) Card 0 Span 1" B8ZS/ESF
> [channels]
> group=1
> context=from-pstn
> switchtype = national
> signalling = pri_cpe
> channel => 1-23
>
> ; Span 2: TE4/0/2 "T4XXP (PCI) Card 0 Span 2" B8ZS/ESF RED
> group=2
> context=from-pstn
> switchtype = national
> signalling = pri_cpe
> channel => 25-47
>
> ; Span 3: TE4/0/3 "T4XXP (PCI) Card 0 Span 3" B8ZS/ESF RED
> group=3
> context=from-pstn
> switchtype = national
> signalling = pri_cpe
> channel => 49-71
>
> ; Span 4: TE4/0/4 "T4XXP (PCI) Card 0 Span 4" B8ZS/ESF RED
> group=4
> context=from-pstn
> switchtype = national
> signalling = pri_cpe
> channel => 73-95
>
> Thanks,
> Steve Totaro
>
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-- 
Best Regards
Rizwan Hisham
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