Using NowSMS as SMPP router

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SMS & MMS Technical Forum » NowSMS Support - SMS Issues (Product Support Only) » Archive through October 19, 2005 » Using NowSMS as SMPP router « Previous || Next »
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Unregistered guest
Posted on Sunday, July 17, 2005 - 06:01 pm:   

My NowSMS is connected to broadband SMPP gateway, and also acts as SMPP server. All Submit_SM requests to this server are routed normally to the gateway. Submit_SM requests have Registered flag set to 1, which should bring back delivery reports for each submitted message.

The problem is that NowSMS SMPP server doesn't pass deliver reports to it's client, however it successfully gets them from the gateway (I can see this in log files).

Could you please advise something to solve?
Bryce Norwood - NowSMS Support
Board Administrator
Username: Bryce

Post Number: 4722
Registered: 10-2002
Posted on Friday, July 29, 2005 - 07:12 pm:   

Hi Sergey,

See the discussion in the following threads:

Unregistered guest
Posted on Wednesday, September 07, 2005 - 11:24 am:   

Dear All,
I am using NOW SMS gatway and using VPN to connect with SMSC Network. When i try to connect the NOW Gatway with SMSC by SMPP Over TCP/IP, it shows that connection is successfully established,And at the SMSC end the connection also bind successfully. but in the SMSOUT.LOG file, it shows the error
"SMPP Failure -- Unable to login to SMPP server with specified parameters: ERROR: Bind Failed "
Now SMS is comming IN,
All the parameters are correct.but it shows this error,some time it connect itself and start working and some time show this problem.
please help to fix this Problem.

ashot shahbazian
New member
Username: Animatele

Post Number: 41
Registered: 06-2004
Posted on Saturday, September 10, 2005 - 12:00 am:   

This may happen if the connection type wasn't properly matched with that of the SMSC.

I suggest that you ensure that port numbers for their transmitter and the receiver match those specified on your side.

If you are connected upstream as trx the connection type on the carrier side should also be set as trx, with send/receive ports matching those set up on your side.
Bryce Norwood - NowSMS Support
Board Administrator
Username: Bryce

Post Number: 4905
Registered: 10-2002
Posted on Thursday, September 15, 2005 - 07:16 pm:   

Also, this error might happen during startup if you shutdown and immediately start back up.

Some SMSCs are slow to release a session and won't let you reconnect until the SMSC releases the previous session.

NowSMS does all it can to gracefully disconnect when it is shutdown, but I have seen some situations where SMSCs are just slow to release.

So that is one possibility.

It is also possible that your provider wants you to connect as a "transceiver" for sending and receiving messages.

By default, with an SMPP connection, if you check "Receive SMS", NowSMS will establish 2 connections to the SMS service provider, one for sending and one for receiving. This can result in some errors with providers that only allow a single session and expect you to use "transceiver" mode (single connection) for sending and receiving. There is a configuraton option under "Advanced Settings" when you define the SMPP connection in NowSMS for enabling "Transceiver" mode.


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