[cisco-voip] A little Fun

Jonathan Charles jonvoip at gmail.com
Sun Oct 7 19:41:26 EDT 2007


SIP is dumb.

But I will concede the correction, you do need to be in Settings mode
for the **#** to work...



Jonathan

On 10/7/07, Jozef Janitor <jozjan at cnl.tuke.sk> wrote:
> Thank you.
>
> As far as I know the **#** combination doesn't restart the 7940 with SIP
> firmware.
> You have to press the " * + 6 + Settings " combination at the same time to
> restart it.
>
> Anyway, thanks :)
>
> All the best,
>    Jozef Janitor
>
>
> > -----Original Message-----
> > From: Jonathan Charles [mailto:jonvoip at gmail.com]
> > Sent: Sunday, October 07, 2007 6:28 PM
> > To: Jozef Janitor
> > Cc: Cisco Voice
> > Subject: Re: [cisco-voip] A little Fun
> >
> > On 10/5/07, Jonathan Charles <jonvoip at gmail.com> wrote:
> > > Here's a few....
> > >
> > >
> > > What IP Protocol number is UDP?
> > >
> >
> > 17
> >
> > > What command turns RIP into a quasi-link state protocol?
> > >
> >
> > On the interface:
> >
> > ip rip triggered
> >
> > > What command turns a layer-2 switched interface into a layer-3
> > > routable interface?
> > >
> >
> > no switchport
> >
> > > What is the advantage of a separate voice vlan?
> > >
> >
> > To establish separate QoS for voice traffic and prevent data traffic
> > from using those queues, to segment traffic
> >
> > > What is the purpose of the command 'ebgp multihop'?
> > >
> >
> > If the IP on a BGP neighbor is more than one hop away, you need this
> > command.
> >
> > > How do you prevent MGCP from using a loopback as its source
> > interface?
> > >
> >
> > no mgcp bind loopback 0
> >
> > > Identify a version of IOS that is compatible with CME.
> > >
> >
> > 12.4.4XC, 12.4.11XJ, 12.4.15T
> >
> > > What is the minimum bandwidth for intracluster communication between
> > > CallManagers?
> > >
> >
> > 900k
> >
> > > The command 'passive interface fa0/0' does not prevent routing
> > updates
> > > from being received for which routing protocol(s)?
> > >
> >
> > RIP
> >
> > > What could be the side effects of lowering the ARP timeout to 3
> > > minutes? What is the default?
> > >
> >
> > The default is 4 hours. Lowering this causes intermittant network
> > failures as devices re-ARP for destinations and the first packets
> > fail.
> >
> > > What are the potential problems while doing mutual redistribution of
> > > two routing protocols? How do you mitigate this problem?
> > >
> >
> > Routing loops from hell, use distribute lists to prevent your
> > advertised routes from being sent back at you.
> >
> > > What configuration register setting on a Cisco router will bypass the
> > > startup configuration file on bootup?
> > >
> >
> > 0x2142
> >
> > > What is the recommended DSCP for VoIP traffic? [make sure they
> > mention
> > > CS3 or AF31 for control]
> > >
> >
> > EF for payload, CS and AF31 for control
> >
> > > What tool can be used to correct CallManager 4.X database replication
> > > problems? Do you have this file?
> > >
> >
> > DBLHelper
> >
> > > What version of CallManager supports IPCC 4.5?
> > >
> >
> > 5.x and 6.x
> >
> > > What is the recommended Antivirus application for CallManager 5.X?
> > >
> >
> > Macafee v8... etc.
> >
> > > What keypad entry resets a Cisco 7940 IP Phone?
> > >
> >
> > **#**
> >
> > > How would you find out the IP address assigned to an ATA 186?
> > [looking
> > > for the #80 thing]
> > >
> >
> > hook up an analog phone, press button on ATA, when the British chick
> > says, "Configuration Menu" type # 8 0, the system will tell you the IP
> > Address.
> >
> > > What is MDIX?
> > >
> >
> > It is a switch feature that autosenses the cable (straight thru or
> > crossover) and changes the pinouts of the port to match.
> >
> > > What happens if you fail to enter the 'login' command under 'line vty
> > > 0 4' on a router?
> > >
> >
> > You do not get prompted for a login when you telnet to the
> > router/switch.
> >
> > > What debug would you use to see inbound and outbound call info on a
> > PRI?
> > >
> >
> > debug isdn q931
> >
> > > Why would you choose CatIOS over IOS for a Cisco 6500 series switch?
> > > [looking for auto qos and support for the 6608]
> > >
> >
> > Auto QoS and the 6608 blade are not supported in IOS
> >
> > > Which protocol, MGCP or H.323 would you choose for a gateway, and
> > why?
> > > [see if they know about limits of each, benefits of each]
> > >
> >
> > MGCP provides for advanced PRI features, H.323 is more reliable for
> > low bandwidth links and provides for call survivability.
> >
> > > You have an IP phone that says, 'configuring IP' but will not
> > register, why?
> > >
> >
> > Can't get an IP address... check DHCP server, vlan, etc.
> >
> > > You have an IP phone that says, 'error DBConfig' and will not
> > register, why?
> > >
> >
> > Phone not configured on CCM and auto-registration is disabled.
> >
> > > You have an IP phone that says, 'temp Fail', what does this mean?
> > >
> >
> > Wrong Codec.
> >
> > >
> > > Work on those...
> > >
> > >
> > > Jonathan
> > >
> > >
> > >
> > >
> > >
> > > On 10/5/07, Kevin Dunn <cheesevoice at gmail.com> wrote:
> > > > Thought you guys might want to take a break and help me out on a
> > "related"
> > > > issue...
> > > >
> > > > We are interviewing new Network Engineer Applicants next week.
> > > >
> > > > While I was writing up my list of questions (the boss needs 10) I
> > thought I
> > > > would throw this out to you guys.
> > > > If you could write an interview question for your next Network
> > Engineer
> > > > (let's say Professional Level certification in Networking, Security
> > or
> > > > Voice)
> > > > what would you ask them?  (try to keep it technical, nothing about
> > Packer's
> > > > tickets or Beer...lol)
> > > >
> > > >
> > > > _______________________________________________
> > > > cisco-voip mailing list
> > > > cisco-voip at puck.nether.net
> > > > https://puck.nether.net/mailman/listinfo/cisco-voip
> > > >
> > >
>
>


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