[Asterisk-Users] Re: equipment configuration help

Thu Sep 1 07:25:48 MST 2005

Do i have to change the adsl routers? or just do QoS with the Layer 3 switches?
Will my ADSL router respect the QoS setting when sending the packet to
the Internet?

On 9/1/05, asterisk groups <astgroups at adelphia.net> wrote:
> Erick,
> 
> After reviewing your original message a little closer it occurs to me
> that you may be able to trunk Asterisk<--->Meridian with 2 Digium TDM400
> cards. These are Quad FXS or FXO cards that could receive the lines from
> your 8 analog line card.
> 
> You'll still need an E1 card (Digium or Sangoma) to terminate your PRI
> line, but maybe with those TDM400 cards you can avoid the added cost of
> a channel bank.
> 
> Regarding your WAN and branch offices;
> 
> 1. I've seen comments that tunneling VoIP traffic through IPSec can add
> overhead/delay that could impact voice quality. Something to keep in
> mind. I have trunked Asterisk boxes in MIA,BUE,SAO, etc. but trunk with
> IAX over the Internet not tunneled or encrypted and performance is fine.
> 
> 2. In your two locations with 15 & 50 users you should consider
> installing Asterisk boxes in those locations and trunking them together
> with IAX over the Internet. Perhaps go ahead and do the same thing with
> the smaller office. You can justify a small Asterisk implementation in
> an office with 5 phones.
> 
> 3. For QoS look for L3 managed switches that can do QoS and/or bandwidth
> allocation. Cisco, Dell, Nortel, HP can all do this, maybe even more
> economical D-Links. Put these behind your PIX. It is also recommended to
> do separate VLANs for any SIP hard phones you deploy. This adds another
> layer of security and reliability.
> 
> Hope this helps.
> 
> 
> 
> 
> 
> On Wed, 2005-08-31 at 21:43 -0500, Erick Perez wrote:
> > -M, The norstar has no E1 card, i will have to ask the nortel provider
> > for the cost of it and configuration prices. I might end up paying the
> > same as the channel bank.
> > I was also thinking of using a Citel SIP-N-NORSTAR converter but its
> > priced at around 3k. Too expensive because its only 24 ports and i
> > have 32 nortel phones.
> >
> > According to this wiki
> > http://www.voip-info.org/tiki-index.php?page=Asterisk+Nortel
> > "One problem with this approach is that in a Norstar system, it isn't
> > easy to forward an extension to an outside line, which means Norstar
> > phone users will have to remember to do something different when they
> > want to call a user who has been switched to an IP phone for example."
> >
> > I guess that can be sorted out.
> >
> >  Any manuals out there for configuration like
> > [Telephone Company] ---E1--- [Asterisk with sangoma s102] ---T1
> > channel bank--- [Norstar]? (only the asterisk-t1-norstar part)
> >
> > Now another section, networking.
> > The 3 offices are linked via VPNs like this
> > Internet---ADSL Router-----Cisco PIX  Firewall---LAN
> > doin ip tunneling will solve all communication problems internally,
> > but what about QoS and SIP phones being taken to the public internet?
> > one office has 5 users, the other 15, the other 50. ADSL Router
> > recommendiations?
> > and as for the phones being taken to the outside? what kind of
> > configuration do i use? IAX is not an option.
> >
> >
> >
> > On 8/31/05, asterisk groups <astgroups at adelphia.net> wrote:
> > > Erick,
> > >
> > > Consider trunking your Meridian to the Asterisk via an E1 card on the
> > > Nortel. That way you'll be able to maintain your proprietary Nortel
> > > phones and won't need a channel bank.
> > >
> > > Your implementation would be something like this:
> > >
> > > Cable & Worthless E1(or whoever)-->Asterisk(Sangoma port 1)-(Sangoma
> > > port 2)-->Meridian--->Nortel Digital phones
> > >
> > > suerte,
> > > -M
> > >
> > > On Wed, 2005-08-31 at 18:37 -0500, Erick Perez wrote:
> > > > Update to myself:
> > > > So in terms of equipment I will need:
> > > > Sangoma a102 E1 (two E1 ports) plus a E1 crossover cable
> > > > a channel bank with 8 FXS ports
> > > >
> > > > sounds expensive for just 8 analog ports. Any ideas?
> > > >
> > > >
> > > >
> > > > On 8/31/05, Erick Perez <eaperezh at gmail.com> wrote:
> > > > > Hi, Im about to start shopping parts for an * box. We are migrating
> > > > > from a Meridian Norstar+ Modular ICS
> > > > >
> > > > > Here are the customer details:
> > > > > a) Meridian with 8 analog lines card and 32 nortel digital phones and
> > > > > voicemail. We will interface * to the meridian using the analog ports
> > > > > so we dont loose the phones.
> > > > >
> > > > > b)half E1. The * box will get half E1 (with DID) for connecting to the
> > > > > local telco.
> > > > > We need two recepcionist/operator phones (sip or whatever)
> > > > >
> > > > > So in terms of equipment I will need:
> > > > > Sangoma a101 E1/PCI
> > > > > an 8 port analog card
> > > > > a channel bank?
> > > > >
> > > > > Can someone tell me if i really have to buy an analog card? or maybe
> > > > > link me to a web site that explains (with images) how a t1/e1 is
> > > > > managed?
> > > > >
> > > > > Thanks, and I apologize for this completely newbie question. I've
> > > > > never seen images or instructions on how to handle this. Im not even
> > > > > sure im using the right terms in Google.
> > > > >
> > > > > --
> > > > >
> > > > > -------------------------------------------
> > > > > Erick Perez
> > > > > Linux User 376588
> > > > > http://counter.li.org/  (Get counted!!!)
> > > > > Panama, Republic of Panama
> > > > >
> > > >
> > > >
> > >
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> >
> >
> > --
> >
> > -------------------------------------------
> > Erick Perez
> > Linux User 376588
> > http://counter.li.org/  (Get counted!!!)
> > Panama, Republic of Panama
> > _______________________________________________
> > --Bandwidth and Colocation sponsored by Easynews.com --
> >
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-- 

-------------------------------------------
Erick Perez
Linux User 376588
http://counter.li.org/  (Get counted!!!)
Panama, Republic of Panama