Subject: [Sigtran] Query : Regarding IUA message if the user equipment is unplugged

From: "Santosh Agarwal" <[email-masked]>
Date: Wed, 4 Dec 2002 17:10:48 -0000

Hello All,

There is a problem whereby the PRI interface takes quite sometime to come up
in case the Interface is unplugged and put back.

In case of the below scenario, how is the IUA  expected to behave..
PBX ---------(e1)-------------SG-----------(iua)-------------MGC

If the PBX is unplugged and put back. Is the User allowed to bring up the
Interface. by sending a Q.921 establish request(SABME)

If The PBX will send a SABME to SG, Does the SG inform the same to the MGC.
Or wait for the MGC to send the IUA_Establish request.( after some user
defined time)
This causes delay since there is no message in GWC to inform that the
interface has gone down.

Thanks for your time ..

Regards
Santosh Agarwal