Can someone explain in detail BLUE or alarm indication signal (AIS) in E1 or T1?
Saravanakarthi 09-January-2008 12:09:19 PM

Comments


I think in short BLUE: alarm indication signal (AIS): The AIS (alarm indication signal) is used to indicate loss of layer 1 capability in the ET-to-TE direction on the network side of the user-network interface. A characteristic of AIS is that its presence indicates that the timing provided to the TE may not be the network clock. AIS is non-framed and coded as all binary ONEs
Posted by HamidAliKhan


Yes AIS basically indicates the User-Network.
Posted by waqqas1


AIS basically indicates the User-Network
interface loss in ET-to-TE direction on network.
Posted by sagitraz


BLUE: alarm indication signal (AIS): The AIS (alarm indication signal) is used to indicate loss of layer 1 capability in the ET-to-TE direction on the network side of the user-network interface. A characteristic of AIS is that its presence indicates that the timing provided to the TE may not be the network clock. AIS is non-framed and coded as all binary ONEs
Posted by vance



Posted: 09-January-2008 12:26:30 PM By: vance

BLUE: alarm indication signal (AIS): The AIS (alarm indication signal) is used to indicate loss of layer 1 capability in the ET-to-TE direction on the network side of the user-network interface. A characteristic of AIS is that its presence indicates that the timing provided to the TE may not be the network clock. AIS is non-framed and coded as all binary ONEs

Posted: 29-December-2008 12:30:54 PM By: sagitraz

AIS basically indicates the User-Network
interface loss in ET-to-TE direction on network.

Posted: 31-December-2008 08:08:47 AM By: waqqas1

Yes AIS basically indicates the User-Network.

Posted: 30-January-2009 12:49:06 AM By: HamidAliKhan

I think in short BLUE: alarm indication signal (AIS): The AIS (alarm indication signal) is used to indicate loss of layer 1 capability in the ET-to-TE direction on the network side of the user-network interface. A characteristic of AIS is that its presence indicates that the timing provided to the TE may not be the network clock. AIS is non-framed and coded as all binary ONEs