10-08-2015 08:06 AM - edited 03-17-2019 04:31 AM
Hi all
we do have a Cisco 2821 router running c2800nm-advipservicesk9-mz.124-24.T4.bin on it. We configured it for MGCP as we did for more than 20 locations. It is connected via E1 PRI. The CUCM servers are on 8.5.1. CUCM shows unregistered but router says it is registered.
I got the following situation:
If it would be a displaying issue we wouldn't worry about it but the E1 doesn't come up as show isdn status shows:
ISDN Serial0/0/0:15 interface
dsl 0, interface ISDN Switchtype = primary-net5
L2 Protocol = Q.921 0x0000 L3 Protocol(s) = CCM MANAGER 0x0003
Layer 1 Status:
SHUTDOWN
Layer 2 Status:
TEI = 0, Ces = 1, SAPI = 0, State = TEI_ASSIGNED
Is the reason that it is at unregistered state in CUCM?
Domain name at both sides matches. We restarted the network services Cisco RIS Data Collector on all CUCM servers - no success.
Reload of router or reset via CUCM didn't help at all.
Any help on this is highly appreciated as many users are awaiting to call their customers.
If you need further information please let me know!
Thanks and regards
Jochen
Solved! Go to Solution.
10-08-2015 09:21 AM
Hi.
So you need a E1 crossover cable.
The pinout is the following:
1<-->4
2<-->5
4<-->1
5<-->2
Try it and let us know
HTH
Regards
Carlo
10-08-2015 08:26 AM
Hi Jochen,
correct.
Until the ISDN layer 2 will stay "TEI ASSIGNED" you will see mgcp endpoints unregistered on CUCM
HTH
Regards
Carlo
10-08-2015 08:33 AM
Carlo, forget layer 2, layer 1 is shutdown, make sure cables are the right ones, and that they are live.
http://docwiki.cisco.com/wiki/Voice_Gateways_FAQ#How_to_check_MGCP_registration.3F.3F
10-08-2015 08:41 AM
Jaime, if layer 1 is up but layer 2 remains , for some reason, down , MGCP endpoint will remain unregistered
As per document you posted
Your PRI will NEVER show up as registered in CUCM, once you plug in a live PRI in the card and Layers 1, 2 and 3 come up, it will register fine.
Cheers
Carlo
10-08-2015 08:49 AM
Yes, I'm merely remarking that on the output he posted, layer 1 is down, you need to fix that, before worrying about layer 2
10-08-2015 09:03 AM
I know :)
Bind commands has been already submitted.
If you see the output of the show isdn status he posted the Layer3 is controlled by CUCM
ISDN Serial0/0/0:15 interface
dsl 0, interface ISDN Switchtype = primary-net5
L2 Protocol = Q.921 0x0000 L3 Protocol(s) = CCM MANAGER 0x0003
Layer 1 Status:
SHUTDOWN
Layer 2 Status:
TEI = 0, Ces = 1, SAPI = 0, State = TEI_ASSIGNED
It depends of what kind of adapter you have on Telco device.
Can you describe it? (db-17 , baloon)
You can also try to send the model of telco device in order to find the correct adapter and pinout
Please let us know
Regards
Carlo
10-08-2015 09:20 AM
controller e1 0/0/0 and int serial 0/0/0:15 are not administratively down just in normal down state. Looks like we do have a cabling issue.
The telco device is a Yeastar TE100. I assume it does SIP to the outside and isdn pri to our router.
10-08-2015 09:21 AM
Hi.
So you need a E1 crossover cable.
The pinout is the following:
1<-->4
2<-->5
4<-->1
5<-->2
Try it and let us know
HTH
Regards
Carlo
10-08-2015 09:28 AM
Thank you for your assistance. As I am not onsite I will try to organize a cable with this pinout. I will inform you when it's done. Thank you!
10-14-2015 02:19 AM
After connecting a cable with correct pinout layer 1 went ACTIVE and GW registered at CUCM. Layer 2 was awaiting establishment. Then we adjusted some settings on our gateway and Telco site to get it synchronized. Thank you guys for your help!
10-08-2015 08:52 AM
Okay so we have to check the cabling..? I guess there is a normal RJ45 patch cable connected between the providers box and our E1 interface card. I know Cisco uses pins 1,2 and 4,5. As we normally use always standard patch cables I wasn't thinking about layer 1 cabling issue.. Any suggestion which kind of cable we should try? This office is located in CZ. Btw. the provider says that their E1 is activated.
10-08-2015 09:00 AM
Start by making sure your controller and serial interfaces are not shutdown, if they are up, and you still cannot get layer 1 up, do check the cable is the right one, and you're plugging it to the right E1 port, assuming you have more than one.
10-08-2015 08:40 AM
Hi,
Try the following on your Router:
mgcp bind media source-interface <interface>
mgcp bind control source-interface <interface>
interface ser0/0/0:23
isdn bind-l3 ccm-manager
Then reset your mgcp gateway
HTH
10-08-2015 08:57 AM
These commands are set. And as it is a E1 it is interface s0/0/0:15 ;-)
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