[Asterisk-Users] Re: equipment configuration help

Fri Sep 2 11:36:53 MST 2005

So, with this i solve the issue on main office. But what about the two
remote? they are so little that they will not let me place another *
box there. The phones will be SIP and they are like this
INTERNET--PIX--LAN(machines and sip phones). The pixes in those two
offices have an ipsec tunnel with the main office via internet.
I was thinking of placing the asterisk with a public IP so the remote
phones can NAT outside to the public asterisk located in the main
office.

What do you think?

On 9/2/05, asterisk groups <astgroups at adelphia.net> wrote:
> That is correct. Normally the layer 3 switches include advanced features
> such as QoS but they may be available on simpler layer 2 switches.
> 
> I think the key words to look for are 'Managed, QoS (802.1p) with
> priority queues, VLAN, (802.1q)'...maybe even PoE if you go with some
> SIP phones in the future that can be powered by Power Over Ethernet.
> Something else to keep in mind.
> 
> best of luck.
> 
> On Thu, 2005-09-01 at 22:03 -0500, Erick Perez wrote:
> > Why an L3? just for the QoS part?
> > I checked the alliedtelesyn 8624T at $1000.00
> > http://www.cdw.com/shop/products/default.aspx?EDC=772793
> >
> > but i also looked at the 8550T which has 48 port 10-100 but L2
> > http://www.cdw.com/shop/products/default.aspx?EDC=773964&RecommendedForEDC=772793&RecoType=upsell
> > at 900.00
> >
> > is the QoS different? sorry for the question but i keep reading that
> > asterisk needs qos to function better.
> >
> > Thanks,
> >
> > On 9/1/05, asterisk groups <astgroups at adelphia.net> wrote:
> > > Erick- Can't say if they will or not. In theory they should respect all
> > > outgoing traffic unless being filtered by another device such as your
> > > PIX. You might want to check with the ADSL router manufacturer just to
> > > be safe.
> > >
> > >
> > > On Thu, 2005-09-01 at 09:25 -0500, Erick Perez wrote:
> > > > 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
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-- 

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