Tyr SMS Gateway

SMPP technical details

SMS service for transactional and bulk SMS. SMPP and REST SMS APIs supported.

Technical Details: Tyr SMS Gateway

This section provides details specific to the use of SMPP with the Tyr SMS Gateway service. Accounts may be configured different to the defaults shown below and therefore you should check your SMPP Account Details issued by Melrose Labs for details specific to your account.


Connect to any of the following hosts using your SMPP account details:

eu-uk.mlsmpp.net /
London, United Kingdom
eu-de.mlsmpp.net /
Frankfurt, Germany
af-za.mlsmpp.netCape Town, South Africa
na-us.mlsmpp.netNorth Virginia, USA
sa-br.mlsmpp.netSão Paulo , Brazil
ap-au.mlsmpp.netSydney, Australia

Live  Coming Soon  Planned


Non-TLS and TLS connections can be made depending on port use:

8775TLS (recommended)


We strongly recommend the use of SMPP over TLS to secure sessions between applications and our access node hosts. TLS v1.1 and v1.2 are supported. Earlier versions of TLS and SSL are deliberately not supported.

For legacy applications that do not support TLS, we recommend the use of stunnel for using SMPP over TLS.

SMPP Client

Test an SMPP account and service from Melrose Labs or another provider using the Melrose Labs SMPP Client . Use from your web browser. No software installation necessary. Other web browser-based SMPP clients available from Melrose Labs include:

Alternatively, use our txtConsole portal to send messages, get usage reports and look-up messages.

Session Parameters

Bind typesSMPP versionsMaximum bindsSubmit window sizeMax. submit rateCharacter Sets
TX, RX, TRX v3.3, v3.4 (default) or v5 10 per host 20 2000 SMS/sec GSM (data_coding=0)
Latin/ISO-8859-1 (3)
Binary (4)
UCS2 (8)

Operations Supported

Session ManagementMessage SubmissionMessage DeliveryAnciliary Submission

Full details of the Tyr SMS Gateway SMPP support can be found in the SMPP Protocol Implementation Conformance Statement (PICS) .

Delivery Receipts

Delivery receipts and intermediate notifications have the following format and are contained in the short_message field of the deliver_sm:

	id:IIIIIIIIII sub:SSS dlvrd:DDD submit date:YYMMDDhhmm done date:YYMMDDhhmm stat:DDDDDDD err:EEE text:
  • id: message ID returned in submit_sm_resp (up to 64 characters in length)
  • sub: number of messages originally submitted (set to 001)
  • dlvrd: number of messages delivered (000 or 001)
  • submit date: When message was submitted by ESME
  • done date: When message reached final state
  • stat: State of message (see Name field below)
  • err: Error encountered during delivery (if any)

Additionally, the following TLVs are present in the delivery receipt:

receipted_message_idMC message ID of message being receipted. Should be present for MC Delivery Receipts and Intermediate Notifications.
message_stateDelivery state as shown in below table.
network_error_codeError code specific to a wireless network (see error codes below).

Message states

0ScheduledSCHEDLDThe message is scheduled. Delivery has not yet been initiated. (Intermediate)
1EnrouteENROUTEThe message is in enroute state. (Intermediate)
2DeliveredDELIVRDMessage is delivered to destination. (Final)
3ExpiredEXPIREDMessage validity period has expired. (Final)
4DeletedDELETEDMessage has been deleted. (Final)
5UndeliverableUNDELIVMessage is undeliverable. (Final)
6AcceptedACCEPTDMessage is in accepted state. (Final)
7UnknownUNKNOWNMessage is in invalid state.
8RejectedREJECTDMessage is in a rejected state. (Final)
9SkippedSKIPPEDThe message was accepted but not transmitted or broadcast on the network. (Final)

Error codes

0No error
1Unknown subscriberMSISDN is unknown or invalid
27Absent subscriberMobile is switched off or unreachable
31Subscriber busy for MT SMSMSC is busy communicating with the handset for another transaction (may be receiving another SMS simultaneously)
34System failureSS7 protocol or network failure

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