getting echo and hissing noise on ISD calls

[BCU]

Hi
I have nortel 11c system in my site and connected to only one pri. Using PSTN ,I ma making ISD calls. Whenever making ISD calls getting echo and hissing noise at the background. The same noise not getting in mobile or local Landline calls.
Do I need to reset the PRI or reboot the system? Please suggest what needs to be checked?
-BCU

 

[Firebird Scrambler]

I'd go into LD 60 and key in SSCK 0 to see if the ISDN circuit is locked to your exchange. It sounds as it might be out of sync. Also go into LD 22 and at REQ, key in PRT and at TYPE key in PHST to list out the history file to see if it shows anything.


Firebird Scrambler
Nortel Meridian 1 / Succession and BCM / Norstar Programmer in the UK
Advance knowledge on BCM support

http://www.linkedin.com/in/davidbromley

 

[BCU]

I checked the clocking and its locked to the PRI and when I took the history file I saw some DTA alarms,occured,persisted and cleard 3 times in a day. And after that the line is stable.anything else you want me to check?

-BCU

 

[StanleySteamer]

Local calls okay but long distance calls bad on the same trunks? I'd say you need to discuss with the long distance provider. Chances are they have some bad voip routing.