Vic,
Loppback solution is *only* used as a workaround for invoking Xcoder
.Because calling from WAN to CME and then hitting AA would not force CME to
involve Xcoder.
So as a workaround we direct traffic to the loopback thus CME and Xcoder and
then AA will come to play.
Here is the proof.
GK with setup of G711 .
voice translation-rule 800
rule 1 /6667878/ //
voice translation-profile INCOMING_GK
translate called 1
dial-peer voice 800 voip
service aa
translation-profile incoming INCOMING_GK
incoming called-number 66678784444
dtmf-relay h245-alphanumeric
codec g711u
no vad
sh gatekeeper call
LocalCallID Age(secs) BW
138-14 13 128(Kbps)
Endpt(s): Alias E.164Addr
src EP: GK_TRUNK_1 2001
CallSignalAddr Port RASSignalAddr Port
140.0.0.1 3345 140.0.0.1 3245
Endpt(s): Alias E.164Addr
dst EP: CME 66678784444
CallSignalAddr Port RASSignalAddr Port
140.0.3.254 1720 140.0.3.254 49270
Opbviously ARQ does not comes into play adn we need just 128 for G711 .
This way Service aa kicking in and work properly with out loopback solution.
Cyrus
On Thu, Jan 15, 2009 at 11:09 AM, Vik Malhi <vma...@ipexpert.com> wrote:
> The Loopback solution is used for calls from the WAN invoking the AA and
> also CME phones calling the AA- (144/128).
> --
> Vik Malhi – CCIE #13890, CCSI #31584
> Senior Technical Instructor - IPexpert, Inc.
>
> Telephone: +1.810.326.1444
> Fax: +1.810.454.0130
> Mailto: *vma...@ipexpert.com
>
> *
> Join our free online support and peer group communities:
> *http://www.IPexpert.com/communities
> *IPexpert - The Global Leader in Self-Study, Classroom-Based,
> Video-On-Demand and Audio Certification Training Tools for the Cisco CCIE
> R&S Lab, CCIE Security Lab, CCIE Service Provider Lab , CCIE Voice Lab and
> CCIE Storage Lab Certifications.
>
>
>
>
>
>
>
> ------------------------------
> *From: *Cyrus <cyrus....@gmail.com>
> *Date: *Thu, 15 Jan 2009 06:13:45 +1100
> *To: *Vik Malhi <vma...@ipexpert.com>
> *Cc: *<ccie_voice@onlinestudylist.com>
> *Subject: *Re: [OSL | CCIE_Voice] BACD Voip peers
>
> Vic,
>
> Loopback solution is used as workaround to force CME to kick in the
> Xcoder.As we can see with G711 ,there is no need for loopback solution.
>
> But BACD work properly ,we need at least 144k BW on GK, please correct me
> if I'm wrong
>
> 128+16 for incoming calls from WAN
>
>
> On Thu, Jan 15, 2009 at 4:56 AM, Vik Malhi <vma...@ipexpert.com> wrote:
>
> Ok- Jose got it right and this is what he was about to say (right?)
>
> What is the difference between these two dial-peers on a gateway registered
> to GK?
>
> Dial-peer voice 1 voip
> destination-pattern 1...
> session target ras
> ...
>
> AND
>
>
> Dial-peer voice 2 voip
> destination-pattern 1...
> session target ipv4:<Loopback0 IP Address>
> ...
>
>
> When peer 1 is used an ARQ is sent to GK- it contains a bandwdidth Request
> and also a called # that needs resolving.
>
> When peer 2 is used an ARQ is also sent to the GK since this is also a VOIP
> call on a gateway to a gatkeeper- it contains just a bandwidth request
> though since we already did the resolution on the gateway (Lo0).
>
> With the B-ACD call we all know that we are sending the call to himself-
> the
> Loopback interface- as a workaround to invoke "service aa" on the inbound
> voip dial-peer. However the gateway/gk is master/slave and no VOIP call can
> take place without GK's authorization. The gateway doesn't cross-reference
> locally configured ip addresses for every session target.
>
> So even though the call is local GK still needs to accept the bandwidth
> request. And this is where "bandwidth total ... <128" would hurt you since
> the B-ACD call will always use g711ulaw and the INTRA-bandwidth required is
> going to be 128kbps.
>
> Bandwidth total and B-ACD are dangerous for this reason.
>
>
>
> --
> Vik Malhi – CCIE #13890, CCSI #31584
> Senior Technical Instructor - IPexpert, Inc.
>
> Telephone: +1.810.326.1444
> Fax: +1.810.454.0130
> Mailto: vma...@ipexpert.com
>
>
> Join our free online support and peer group communities:
> http://www.IPexpert.com/communities
> IPexpert - The Global Leader in Self-Study, Classroom-Based,
> Video-On-Demand
> and Audio Certification Training Tools for the Cisco CCIE R&S Lab, CCIE
> Security Lab, CCIE Service Provider Lab , CCIE Voice Lab and CCIE Storage
> Lab Certifications.
>
>
>
>
>
>
>
> > From: Chris Parker <cpar...@cparker.us>
> > Date: Wed, 14 Jan 2009 09:34:13 -0500
> > To: Vik Malhi <vma...@ipexpert.com>
> > Cc: "Jose Gregorio Linero (jlinero)" <jlin...@cisco.com>,
> > <ccie_voice@onlinestudylist.com>
> > Subject: Re: [OSL | CCIE_Voice] BACD Voip peers
> >
> > Vik,
> >
> > When I type "no gateway" and try the call again it goes through. So I
> > must be running into this issue. I do have bandwidth total configured on
> > my GK as well. It is set to 96. I'm guessing if I bump it up to 128 to
> > allow a g711 call it'll work?
> >
> > Chris
> >
> > Vik Malhi wrote:
> >> Jose is about to bring a very complicated problem with using the
> >> bandwidth total command inside gatekeeper and how it impacts B-ACD.
> >>
> >> Chris- please make the call to the B-ACD AA from a CME phone and paste
> >> the output of debug ras (assuming the router is registered to a
> >> gatekeeper).
> >> --
> >> Vik Malhi – CCIE #13890, CCSI #31584
> >> Senior Technical Instructor - IPexpert, Inc.
> >>
> >> Telephone: +1.810.326.1444
> >> Fax: +1.810.454.0130
> >> Mailto: _vma...@ipexpert.com
> >>
> >> _
> >> Join our free online support and peer group communities:
> >> _http://www.IPexpert.com/communities
> >> _IPexpert - The Global Leader in Self-Study, Classroom-Based,
> >> Video-On-Demand and Audio Certification Training Tools for the Cisco
> >> CCIE R&S Lab, CCIE Security Lab, CCIE Service Provider Lab , CCIE
> >> Voice Lab and CCIE Storage Lab Certifications.
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >> ------------------------------------------------------------------------
> >> *From: *"Jose Gregorio Linero (jlinero)" <jlin...@cisco.com>
> >> *Date: *Tue, 13 Jan 2009 22:03:59 -0500
> >> *To: *Chris Parker <cpar...@cparker.us>, <
> ccie_voice@onlinestudylist.com>
> >> *Subject: *Re: [OSL | CCIE_Voice] BACD Voip peers
> >>
> >> Hi Chris:
> >>
> >> Is this router registered to a gatekeeper?.
> >>
> >> Regards,
> >>
> >> Jose
> >>
> >>
> >> -----Original Message-----
> >> From: Chris Parker [mailto:cpar...@cparker.us <cpar...@cparker.us>]
> >> Sent: Tuesday, January 13, 2009 09:56 PM Eastern Standard Time
> >> To: ccie_voice@onlinestudylist.com
> >> Subject: [OSL | CCIE_Voice] BACD Voip peers
> >>
> >> I have had problems getting BACD to dial using voip from the phones on
> >> CME. I can dial into the BACD fine from the PSTN, but not from my IP
> >> phones. Here is my config:
> >>
> >> voice service voip
> >> allow-connections h323 to h323
> >>
> >> dial-peer voice 3500 pots
> >> service aa
> >> incoming called-number 3500
> >> port 0/2/0:23
> >> !
> >> dial-peer voice 3501 voip
> >> destination-pattern 3500
> >> session target ipv4:172.16.101.3
> >> dtmf-relay h245-alphanumeric
> >> codec g711ulaw
> >> no vad
> >> !
> >> dial-peer voice 3502 voip
> >> service aa
> >> incoming called-number 3500
> >> dtmf-relay h245-alphanumeric
> >> codec g711ulaw
> >> no vad
> >>
> >> Eveytime I call the number I get "no circuit"
> >>
> >> 128A : 67 125333360ms.53 +-1 +3280 pid:20004 Answer 3004
> >> dur 00:00:00 tx:0/0 rx:0/0 22 (no circuit (34))
> >> Telephony 50/0/4 (67) [50/0/4.0] tx:0/0/0ms None noise:0dBm acom:0dBm
> >> long duration call detected:n long dur callduration :n/a
> >> timestamp:n/a128F : 71 125594800ms.54 +-1 +30 pid:3501 Originate 3500
> >> dur 00:00:00 tx:0/0 rx:0/0 22 (no circuit (34))
> >> IP 0.0.0.0:0 <http://0.0.0.0:0> SRTP: off rtt:0ms pl:0/0ms lost:0/0/0
> delay:0/0/0ms g729r8
> >> pre-ietf TextRelay: off
> >> media inactive detected:n media contrl rcvd:n/a timestamp:n/a
> >> long duration call detected:n long dur callduration :n/a timestamp:n/a
> >>
> >>
> >>
> >
>
>
>
>
>
> --
> Sirus Moghadasian
> CCIE #21862 (R&S)
>
>
--
Sirus Moghadasian
CCIE #21862 (R&S)
