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First you need to understand that as long the call is digital eg ISDN link based etc, the cracling noises might come from either end-device, as the digital stream does contain 1 and 0 there is no way crackling sounds suddenly can appear in them. Rule out that it is your end, by finding out who...

It was the Meridian Configuration, as we did not change anything on the Cisco. I expected the Meridian to be the issue in the first place. When I would have had a clue as to what the engineer changed I would have posted it here, as many of you I do search the web for solutions quite often and...

Hi Guys, This now has been sorted. We had the engineer coming back and he sorted the issue. No idea as to what he did, but it is working now. Thanks for all your input. ~NiteOwls

Hi mikeyb123, I can add more then 25 digits (I did quit putting more in) after I get the 2nd dial tone. So I'm not sure if that is normal? The design is quite simple Telcoms E1 <----> E1 Meridian E1 <----> Cisco SIP Gateway provider |...

Thanks for that input SL1M1

MossEng Thanks for your reply. The dial tone is definitely not coming from the Cisco but from the meridian. In addition the dial-peer is configured with the direct-inward-dial. When we look at the tracing on the Cisco console and protocol analyzer on the E1, there is no activity on the E1...

Hi Reusser, Many thanks for your reply. Almost right with the call flow. When we hear the dialtone we first press the digits and terminate with # done the other way around gives a continuous tone (NI tone?) The Digits are send over ISDN so they are in the ISDN call setup message available. We...

As newbie to this forum I most likely post this on the wrong place, so I apologize beforehand for that :) I'm in the UK and work primarily with SIP software switches. However, we need to integrate a Nortel Meridian Option 11 with a ISDN (E1) to a Cisco gateway, connected to a SIP PBX. We don't...