SMSC is having multiple connections with client But , Client has one connection with SMSC

Question

I am having a strange issue. I am working on sms module for one of the client.

So, I am using Kannel to connect to SMSC server. At the very first attempt means afte

Answer 1

I had the same exact issue with another SMPP client app, it was NowSMS, and also, it was very strange as my NowSMS is connected to +15 SPs since 7 years ago, and I had no such issue with anyone of them. But, NowSMS told me that there's an understandable issue at SP's side and after a some investigations, we noticed that the SP deals with the first established connection only and ignores the other connections, although, I had one single connection only and all previous connections were closed from my side before establishing a new one. So, please discuss the same with your SP, otherwise, share the full config here as you may have something incorrect.

BTW, did you try getting a live TCP trace from your side and SP's side at the same time?