Контекст
SMS Transit Service Provider, SMSIP

и еще, что означает SMSIP - Support of Short Message Service (SMS) over generic 3GPP Internet Protocol (IP)?

Заранее благодарен.

Agreement for SMS Hubbing Services between Operator,
(hereinafter referred to as "Client Operator")and [SMS Transit Service Provider]having its registered address: (Hereinafter referred to as "SMSIP”)(Together “the Parties")

I need Somebody's help!