There's a caveat. When unregistered, the DN's CFNA setting is inherited. If a remote phone has CFNA to VM (or anything else) in normal operation, it cannot be reached internally during SRST mode. SRST is really outbound only, as users will not know to dial 9 + DID.
For example: BR1's WAN fails and phones register with SRST router. HQ phone calls 2001 and goes straight to voicemail. The only way to reach 2001 in SRST mode is to call the off-net DID, but the HQ user wouldn't think to do this. In 4.2, there's a separate setting for Call Forward Unregistered, which can be set to 9 + DID. Does anyone know of any clever ways around this? Greg Jost Network Consulting Engineer Unified Communications Practice Cisco Systems, Inc. 214-274-1922 -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Vik Malhi Sent: Wednesday, April 16, 2008 3:12 PM To: 'Jonathan Charles' Cc: 'CCIE Voice' Subject: Re: [OSL | CCIE_Voice] Dial Plan design question, AAR with vmail... AAR cannot be "down" and AAR can't deny a call. Your entire CallManager cluster is either unavailable (SRST is the solution) or it is available (AAR being the solution when the WAN is saturated). If CallManager is active and alive then AAR cannot fail unless off course it is misconfigured or you are out of B-channels on your PSTN connection. Assuming the CallManager is operational and the remote sites phones and gateway are still registered then AAR is the solution for when Locations CAC blocks the call. So on the remote phon you hit the "Messages" button and CallManager determines there is no Locations bandwidth available. The External Number Mask and AAR Group needs to be configured on the Hunt Pilot for Voicemail. The AAR CSS and AAR Group needs to be configured on the calling (remote) phone. Also in the case of a Call Forward from the remote phone, the remote gateway needs an AAR CSS and AAR Group (+Redirecting # outbound). Assuming the CallManager is not available (WAN outage) then SRST is your only option. Nothing on CallManager works including AAR. Vik Malhi - CCIE #13890 Senior Technical Instructor - IPexpert, Inc. Telephone: +1.810.326.1444 Fax: +1.810.454.0130 Mailto: [EMAIL PROTECTED] 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. -----Original Message----- From: Jonathan Charles [mailto:[EMAIL PROTECTED] Sent: Wednesday, April 16, 2008 1:01 PM To: [EMAIL PROTECTED] Cc: Onur Tufekci; CCIE Voice Subject: Re: [OSL | CCIE_Voice] Dial Plan design question, AAR with vmail... what I meant was SRST config to reroute the call if AAR is down... So, if I am at the remote site, AAR is denying calls and I hit the messages button, what are my options? Jonathan On Wed, Apr 16, 2008 at 2:57 PM, Vik Malhi <[EMAIL PROTECTED]> wrote: > You can configure both- but only one of AAR and SRST will be active at > any one point. When the WAN is saturated signaling still traverses > the WAN. When there is a WAN outage then you lose signaling to the > remote sites and SRST kicks in. From your original question you > indicate that SRST might be a solution for AAR which it isn't. > > > > Vik Malhi - CCIE #13890 > Senior Technical Instructor - IPexpert, Inc. > > Telephone: +1.810.326.1444 > Fax: +1.810.454.0130 > Mailto: [EMAIL PROTECTED] > > 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. > > > > > -----Original Message----- > From: Jonathan Charles [mailto:[EMAIL PROTECTED] > Sent: Wednesday, April 16, 2008 12:41 PM > To: [EMAIL PROTECTED] > Cc: Onur Tufekci; CCIE Voice > Subject: Re: [OSL | CCIE_Voice] Dial Plan design question, AAR with vmail... > > Well the goal is two-fold. > > First, if the WAN is saturated, someone at HQ, should be able to call > BR2 via the PSTN (using AAR), and a CFNA/CFB should route back to > vmail and the correct box > > In the event of a WAN outage, the phones in SRST should also CFNA/CFB > to voicemail and the correct box > > > > > Jonathan > > On Wed, Apr 16, 2008 at 2:23 PM, Vik Malhi <[EMAIL PROTECTED]> wrote: > > > > > > Good point- AAR requires you to configure an AAR CSS, AAR Group on > the > remote site gateway in addition to checking the Redirecting > Number > Outbound checkbox (if this is MGCP then no mgcp/mgcp on the > IOS). You > need to check the Redirecting Number Inbound checkbox on > the HQ > gateway. You also need an external number mask and aar group > on the > hunt pilot. It should work a treat having done this. The > Redirecting > Number is good since CCM builds this in the case of > AAR. Only SRST > needs a workaround solution to get the caller to hear subscriber greeting. > > > > The SRST solution was outlined in a previous email. > > > > Don't overlap the two questions/solutions since they are mutually > exclusive. > > > > > > > > Vik Malhi - CCIE #13890 > > Senior Technical Instructor - IPexpert, Inc. > > > > Telephone: +1.810.326.1444 > > Fax: +1.810.454.0130 > > Mailto: [EMAIL PROTECTED] > > > > 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: [EMAIL PROTECTED] > > [mailto:[EMAIL PROTECTED] On Behalf Of Onur > > Tufekci > Sent: Wednesday, April 16, 2008 12:12 PM > > To: > Jonathan Charles > Cc: CCIE Voice > Subject: Re: [OSL | CCIE_Voice] > Dial Plan design question, AAR with vmail... > > > > > > > > Are you trying to configure only AAR or only SRST? > > > > > > On Wed, Apr 16, 2008 at 2:03 PM, Jonathan Charles > <[EMAIL PROTECTED]> > wrote: > > > > > OK, so AAR kicks in and I forward the call to the PSTN, the user > I > > was dialing does not answer and the call should forward to vmail... > > > how would we make this work? voicemail under srst config? > > > > > > > > > > > > Jonathan > > > > > > > > >
