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Data Coding

The Vibes Connect SMSC currently supports the following Data Coding:

Data Coding



SMSC Default (ASCII/IA5)




GSM 7 bit


UCS2 (ISO/IEC-10646)

If a Data Coding is not supported by the carrier, the message will be encoded using the carrier's default, which may result in some characters not being encoded correctly. Currently only ASCII is supported across all carriers.

Phone Number / MSISDN Format

The Short Message Service Center (SMSC) supports the following formats:

  • National (10 digits)
  • International (11 digits)
  • E.164

Mobile Terminated (MT) messages to Phone numbers in the US and Canada can be set in any of the previous formats. The rest should be set in the E.164 format.

Mobile Originated (MO) messages from US and Canada will default to the National format, and the rest will always be in the E164 format. The Phone number format for MOs from the US and Canada can be changed, if required, to the other supported formats when the account is being set up.

TON and NPI and Other Settings

Source TON

0 - for messages sent via Shortcode or Longcode

5 - for messages sent via Alphanumeric Code (non US )

Source NPIAlways 0
Destination TONAlways 0 - Non US/Canada MDNs must be sent in e.164 format. 

Destination NPI

Always 0
System TypeIgnored - Leave blank
Service TypeIgnored - Leave blank
Validity PeriodNot used - Leave blank

TLV Parameters

The following are additional Type Length Value (TLV) parameters that could be set on MO and MT messages. Please see Vibes Optional TLVs for the complete specification of each TLV. 




Carrier Code


Used to identify the carrier on a message. 
It will always be set on MO messages and is optional on MT messages.

Alternate Message Delivery

YesUsed to specify if Alternate Message Delivery should be used upon message failure.
This feature is not supported for concatenated messages. 
Message PayloadYesUsed to send a long message greater than 140 bytes. This should be used whenever possible for long messages as it is a better option than UDH headers for multipart SMS.

Concatenated Messages

The SMSC supports concatenated MO and MT messages via the User Data Header (UDH).

The User Data Header Indicator bit should be set to 1 in the ESM class for concatenated messages. Refer to Wikipedia for more information on how to construct the User Data Header.