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Just before I move on to the next task,
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I did get the PSTN phone up, as you can see here
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and I’ll point out what the problem was really briefly.
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Let’s clear this off, show run pipe 2 section telephony.
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I had actually had the URL authentication in here
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but I did not have the verify CISCO
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username and password add on.
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And so the PSTN actually, this is the branch 2 router.
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0:00:40
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But the PSTN actually authenticates off
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the branch 2 router. That’s just the way we have it set up for
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believe or not, our simplicity and mainly for our scripting
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and some things that we do there. So,
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The PSTN authenticates off the branch router. It does have to be set up
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for you to control the PSTN whether you are using
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branch 2 CME or not. It does need to be set up at least
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in CME configuration, not SRST,
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to be able to achieve that. So that was the problem I was just missing those two.
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Put those and everything works.
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0:01:19
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One of the other things we did not really test was some of the fall back
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features such as the speed dials let's say. So let’s say the SIP
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If I click on one of the speed dials,
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it works properly.
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It's updating the screen. It's ringing, there we go.
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And our intercom
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feature still work. Our privacy buttons work
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So, everything that we had configured previously
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in CUCM or previously in CME
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and have tested in
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previous modules in CME, if you would like more information about those
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go back. Those still work as well. So this next task
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0:02:01
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for 4-digit reachability and we are told to ensure that all
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phones are still able to reach each other
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by simply dialing a 4-digit
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by simply dialing 4 digits when in fall back mode.
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0:02:11
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And that every receiving phone only sees the caller’s
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4 digit extension for caller ID and their name display.
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0:02:19
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Let’s go ahead and try this. First of all,
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if any of these four phones that are in fall back
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want to try to reach the
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Corporate Headquarter phone, well there's certainly
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0:02:34
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I'm sorry, if they wanna try to reach each other
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they have no problem doing so. So, skinny phones,
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let's actually just dial 3003
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for the SIP phone over here
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We see the phone arrive and we can call.
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0:02:52
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But what happens if this phone wants to dial 1001
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to reach Jack Shepherd
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and he is getting re-order tone. So
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0:03:07
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What would need to do is we need to make sure that we’ve got some sort of
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dial peer for him. Well, let’s just take a look at our dial peers.
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0:03:16
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Actually, let’s do begin with dial peers so that we’ve got the separation.
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0:03:22
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We see the core list to begin with.
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0:03:24
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We’ve got some pots that an inbound dial peer.
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We’ve got our two emergency outbound dial peers
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and we’ve got our local, national, international and VOIP
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for CUE that we mentioned we’ll use later for
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0:03:39
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for our prompt recording
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0:03:43
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But right now, we need to make sure that we have a configuration that will allow
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our branch 2 phones in fall back to dial
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a 1000 series
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and we could even do a 2000 series number
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as well even though we don’t currently have any phones there.
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0:03:56
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Let’s do dial peer voice
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and let’s name it, let's call it 100
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and it is gonna pots because we need to dial out through ISTN.
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0:04:05
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Typically, the WAN is what’s down in SRST mode.
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0:04:08
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Not necessarily in this case. It is an ACL but
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that sort of what we are simulating.
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0:04:14
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The other reason we use an ACL is not only for
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0:04:18
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other subnet phone but we would not be able to remotely control the phones if we
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ad anything but and ACL in there at corporate headquarter site.
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0:04:26
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Let’s first configure our destination pattern
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is going to be beginning with 1… ending with
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0:04:38
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And we’ll say port 0/0/0:15
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0:04:44
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Let’s do a prefix of
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0:04:47
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Now, this is not the only way to do it if we want to collapse both
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corporate headquarter and branch 1 onto a single dial peer
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0:04:53
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We could do a destination pattern of
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0:04:56
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^[12]
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0:05:00
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and then we could a do a voice translation rule.
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0:05:02
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But let’s do a prefix here of
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0:05:08
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We’re here in Amsterdam so
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at least according to dial plan we’ve been using
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throughout this series. So let’s do 00
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0:05:17
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For international, 1206501 and
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0:05:26
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that's enough. And then we'll go ahead
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0:05:30
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And we'll also, we’ll not put any core list or anything like that.
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0:05:34
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We’ll have our dial peer 101 pots
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0:05:39
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and our destination port will stay the same.
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0:05:42
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Destination pattern will be 2…
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0:05:46
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and our prefix will be 001512602
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0:05:54
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and that's enough because the rest was already specified.
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0:05:59
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Now, whenever we put, now you might say, "Wait a minute
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0:06:02
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pots dial peers strip
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0:06:04
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digit strip in the explicitly matched digits such as that.
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0:06:07
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They do unless they you put a ^
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0:06:10
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If you have a ^, digit strip or no digit strip, doesn’t really matter what you configure there.
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0:06:14
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The default is digit strip, it will not strip a digit.
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0:06:18
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One of the reasons you should probably
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0:06:20
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not normally put a ^ before an international dial peer
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0:06:23
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But ^ does omit the digit strip.
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0:06:26
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So now,
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0:06:29
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just write that router config, minimize that and let’s try to dial this number again
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0:06:36
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and sure enough, Jack is getting the call
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0:06:39
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at his corporate headquarter site.
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0:06:42
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If we look, this call went out properly over the PSTN
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0:06:46
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and he can answer the call in which I'd hit mute
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0:06:51
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to avoid the feedback and we’ll hang up.
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0:06:56
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So, that call works properly.
|
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0:06:59
|
What about Jack trying to dial over to the
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0:07:02
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3000 series. Let’s have them try it out 3002.
|
|
0:07:09
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So, Jack at corporate headquarters
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0:07:11
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is dialing 3002
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0:07:14
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It’s coming in from Jack Shepherd
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0:07:17
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3002
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0:07:19
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but notice it is coming in from Jack Shepherd and his
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0:07:22
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10-digit number
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0:07:26
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for caller ID, not for
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|
0:07:31
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It’s not coming in as a 4-digit number.
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0:07:34
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Let’s go back to our CUCM configuration
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0:07:44
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and the reason it is reaching it is of course we've put that
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0:07:48
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+ number in there in the
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0:07:52
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We did this in the last task. In each of the lines,
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0:07:56
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we put a call forward unregister for internal and external
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0:08:00
|
to the + or fully globalized
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|
0:08:03
|
E164 number with this calling search space.
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0:08:07
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However, let’s go take a look at the CSS.
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0:08:11
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So that CSS is dial device
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0:08:15
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branch 2 PSTN.
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0:08:18
|
Let’s do Contains Device.
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0:08:22
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There is our dial device branch 2 PSTN.
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0:08:25
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It contains dial device branch 2 only,
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0:08:29
|
device nell, PSTN and internal DNs.
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0:08:34
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So, without closing that, let’s open our translation patterns,
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0:08:39
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new route patterns and let’s look at anything that begins with \+.
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|
0:08:45
|
We have got a number of things to do. Here’s the most specific pattern
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|
0:08:49
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regardless of the partition. Now, let’s look at the partition.
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0:08:53
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Dial device nell PSTN is that in the CSS.
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0:08:57
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Yes it it. So, that is the match pattern.
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0:09:00
|
If we wanted to be sure that there was no
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|
0:09:02
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route pattern or anything else that was more specific
|
|
0:09:05
|
we could certainly always do route plan report.
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0:09:09
|
All patterns that match \+
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0:09:12
|
and see, alright we've got
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0:09:16
|
or so how many in a page, 27 is what we returned
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|
0:09:19
|
Let’s actually just do \+31
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0:09:24
|
There we go. There is our most specific. We’ve got three of these.
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0:09:27
|
Two of them are number transformations have called and calling
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|
0:09:31
|
and those would be able to be matched, they wouldn’t
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|
0:09:34
|
dial anywhere but they would be able to be matched if
|
|
0:09:37
|
the calling search space contained those partitions. It does not.
|
|
0:09:40
|
So, here is the most specific match. It was a translation pattern
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|
0:09:45
|
and everything should be fine with that.
|
|
0:09:48
|
The problem is though, if we could click on that, it uses the calling parties
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|
0:09:51
|
external phone number mask. That’s all it uses
|
|
0:09:56
|
and that’s because it really wasn’t design for
|
|
0:09:59
|
corporate headquarters site or any other site other than branch 2
|
|
0:10:02
|
to use these pattern as a local pattern essentially.
|
|
0:10:06
|
Let’s actually copy this pattern since it worked, we know the
|
|
0:10:11
|
pattern was matched and the partition matches and the CSS were
|
|
0:10:14
|
outsets to the route pattern
|
|
0:10:16
|
which routes it on all the way. Routeless, route group.
|
|
0:10:20
|
It doesn’t really matter local route group or whatever because we know that the call worked.
|
|
0:10:24
|
Everything works, let’s copy it
|
|
0:10:27
|
and let’s just be more specific. 7033xxx, those are only
|
|
0:10:33
|
4-digit
|
|
0:10:35
|
extensions that begin with three that belonged at the site
|
|
0:10:39
|
site C or branch 2
|
|
0:10:42
|
We don’t want to provide outside dial tone. It doesn’t really matter.
|
|
0:10:47
|
Urgent priority fine, one way or the other, it is gonna cause
|
|
0:10:51
|
problem in this sense but we don’t wanna use calling party external phone number mask.
|
|
0:10:56
|
And we’ll save
|
|
0:10:58
|
and minimize
|
|
0:11:00
|
And let’s minimize this and bring our phones back up
|
|
0:11:05
|
and minimize all the phones as well.
|
|
0:11:08
|
Now, let’s have Jack call that number again
|
|
0:11:15
|
We still see from calling name Jack Shepherd
|
|
0:11:18
|
but now we only see the 4-digit extension
|
|
0:11:21
|
and we can verify that coming in to PSTN
|
|
0:11:25
|
because of our modification of that translation pattern
|
|
0:11:29
|
well, we’ve copy that first, made it more specific a longer match
|
|
0:11:34
|
and then we unchecked the use calling party external phone number mask. Now,
|
|
0:11:40
|
Whether a PSTN would actually let you send
|
|
0:11:43
|
from the headquarter site or out the headquarter site, the calling number
|
|
0:11:47
|
of CLID of a 4-digit extension
|
|
0:11:52
|
it really honestly varies from carrier to carrier.
|
|
0:11:56
|
You would not want
|
|
0:12:00
|
anyone else to ever see this but in this particular situation
|
|
0:12:05
|
where a phone from corporate headquarters is calling a phone
|
|
0:12:09
|
on the branch 2 site. Whether it was SRST or not,
|
|
0:12:12
|
you probably would and that’s a very specific situation
|
|
0:12:15
|
If the carrier allowed it, then
|
|
0:12:18
|
well you would have that nice functionality. I've
|
|
0:12:21
|
really I've seen so many different carriers
|
|
0:12:24
|
that do and do not, both do and do not allow us. Some
|
|
0:12:29
|
that don’t allow it and blocked the calls and some that don’t allow it and
|
|
0:12:33
|
inform you fairly quickly whether through
|
|
0:12:37
|
e-mail, call, letter or whatever.
|
|
0:12:40
|
There’s just varying degrees of different types of carriers out there.
|
|
0:12:46
|
Certainly, in the US and
|
|
0:12:50
|
some of the countries that I’ve also worked with
|
|
0:12:53
|
carriers, sometimes they’re owned by the government, so they are very strict and
|
|
0:12:57
|
pretty much one size is what you are gonna get no matter where you go.
|
|
0:13:01
|
It really just depends so don’t assume anything
|
|
0:13:04
|
in the lab. If you are asked to do something,
|
|
0:13:06
|
if you are talking about a CCIE lab or a lower level cert and you are asked to
|
|
0:13:10
|
give the answer or stimulation to a question or
|
|
0:13:13
|
actually provide a configuration in the CCIE voice lab.
|
|
0:13:18
|
If they asked you to do something
|
|
0:13:20
|
and they are expecting you do it, then
|
|
0:13:22
|
you will be able to accomplish that. In other words, the
|
|
0:13:25
|
their pseudo or simulated telco
|
|
0:13:28
|
or simulated PSTN will allow that.
|
|
0:13:32
|
I have also seen situations where
|
|
0:13:35
|
people have misconfigured their PBXs and
|
|
0:13:38
|
send out 4 digits when they are just calling a regular
|
|
0:13:41
|
person like all of a sudden, I’ll get a caller ID of a 4-digit extension.
|
|
0:13:44
|
It is actually very common with the hospital that I’ve worked with
|
|
0:13:48
|
in the past and
|
|
0:13:50
|
Every time I get a call from them, I see a 4-digit extension
|
|
0:13:53
|
I haven’t worked with them for telephony, by the way.
|
|
0:13:56
|
I have worked with them in other various capacities and
|
|
0:14:00
|
and I just constantly tell them, “You guys got to fix your system.”
|
|
0:14:04
|
It’s just so annoying when you get a call from
|
|
0:14:05
|
4-digit extension because you have no idea who it is
|
|
0:14:09
|
So, that meets the requirements of this task.
|
