# Messaging

- [Learn more about SMS](/messaging/learn-more-about-sms.md): You can’t force the funnel, but you can engineer it.
- [SMS Character Limit](/messaging/learn-more-about-sms/what-sms-character-limit.md)
- [UCS-2](/messaging/learn-more-about-sms/what-is-ucs-2-character-encoding.md)
- [GSM-7](/messaging/learn-more-about-sms/what-is-gsm-7-character-encoding.md)
- [Alphanumeric Sender ID prefixes for SMS](/messaging/learn-more-about-sms/alphanumeric-sender-id-prefixes-for-sms.md): A Sender ID is a unique Value or E.164 formatted mobile number that shows in the “from” field of your text messages on your mobile phone
- [support for International  Alphanumeric Sender ID](/messaging/learn-more-about-sms/support-for-international-alphanumeric-sender-id.md): The alphanumeric sender ID technology allows the sender to send messages using a custom, recognizable sender ID constructed from any combination of numeric and alpha characters (0-9, a-z, A-Z)
- [SMPP Specification](/messaging/smpp.md)
- [Submitting Messages Through SMPP](/messaging/smpp/submitting-messages-through-smpp.md)
- [TLV Configuration for SMPP DLT Implementation](/messaging/smpp/tlv-configuration-for-smpp-dlt-implementation.md)
- [SMPP error codes](/messaging/smpp/smpp-error-codes.md)