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] > >> 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 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)
