Below is the information about Mersad SAM from www.wikipedia.org
"Mersad (Persian: Ambush) is an Iranian advanced low to mid range Air defense system developed in 2010. It fires Shahin (Falcon) missiles which are reverse engineered, domestically upgraded versions of the American MIM-23 Hawk Surface-to-air missiles."
"The Shahin missile is an improved reverse engineered version of US made MIM-23 Hawk Surface to air missile sold to Iran before the 1979 revolution."
"In November 2010, Iranian air force colonel Faramarz Ruh Afza said that Mersad has a limited ability to intercept ballistic missiles."
"...further upgraded one called Shalamche. Iranian Defense minister Ahmad Vahidi stated that the speed is now about mach 3 with an increase of about mach 0.6. He called the missile state of art because of its new electronics which made it highly resistance to Electronic warfare. He said that the range of this missile is about 40 km and it is going to be increased."
Numbers: 40 km range is similar to I-Hawk/MIM-23B Missile. Is Shalamche a copy of I-HAWK?
Mersad: Basic variant. Uses the first generation of Shahin missiles.
Mersad Phase I: Second variant. Tested on October 2010, this variant has a higher range and altitude. It is also capable of engaging more targets simultaneously.
Mersad Phase II: Third variant. This variant is currently under development. It will have double the range and altitude as compared to the basic Mersad.
Unknown Designation: Uses Shalamche missiles instead of Shahin."