02-17-2004 08:42 AM - edited 03-13-2019 03:52 AM
Dear Sir!
I try to use VIC-2BRI-NT/TE with NM-2V module to make ISDN trunk to my PBX = Alcatel A4400 with such
configuration for BRI port
with straight Cat5 cabling:
interface BRI1/0
shutdown
no ip address
isdn switch-type basic-net3
isdn overlap-receiving
isdn not-end-to-end 64
isdn protocol-emulate network
isdn layer1-emulate network
isdn incoming-voice voice
isdn sending-complete
no isdn outgoing display-ie
isdn static-tei 0
isdn skipsend-idverify
no shutdown
!
then reload the gateway.
But then 'sh isdn status' command show that
Layer 1 Deactivated.
But when I connect to this PBX port BRI-S/T port on other router (for data only, without NM-2V), this command show that
Layer 1 Active
I cannot suppose, why?
Can you tell me how such situation can happen?
Best regards,
Nick
02-17-2004 10:42 AM
Nick,
The problem is the ISDN protocol-emulate network command.
I'm assuming that you are connecting to an ISDN extension port on the Alcatel, which will be expecting to see an ISDN phone type device connected, however you've configured the port to emulate network, so you now have both ends of the circuit trying to be master.
When you connect it as a data device it will only be an S interface and so will work with the Alcatel.
Paul
02-18-2004 01:45 AM
Hi Nick,
if you need to be Layer 1 Master, please try to
use a crossovercable.
Nethertheless I would recommend that the router is Layer 1 Slave in any case (at least for those routers which don't have a TDM backplane, e.g. CISCO 3640)
Regards,
Andreas
02-23-2004 03:40 AM
check out this link -
http://www.cisco.com/en/US/tech/tk652/tk653/technologies_configuration_example09186a008010ef6c.shtml
hope it helps
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