BlackBerry maker Research In Motion (RIM) today said it was optimistic of resolving with the Government the issue of lawful interception of its services even as the Canadian smartphone vendor made it clear that only legal monitoring of its data would be allowed.

Faced with the August 31 deadline to address the country's security concerns, a three-member delegation of (RIM) led by Vice-President Robert E Crowe met Home Secretary G K Pillai to discuss government's notice.

Government has set the August 31 deadline for the Canada-based RIM and telecom operators to address its security concerns warning that failure to do so would result in some of the mobile phone's popular services being shut down in the country.

Government wants RIM to make available lawful interception of BlackBerry Enterprise Services (BES) and BlackBerry Messenger Services (BBM) to Indian security agencies.

"I am optimistic," Crowe told reporters after a half-an- hour meeting with Pillai.

In a letter to to the Department of Telecom (DoT) Secretary P J Thomas, Pillai has asked him to convey to the operators and RIM that a technical solution to make available lawful interception of BES and BBM must be found out by the stated deadline.

There are an estimated one million BlackBerry subscribers in the country.

In Toronto, RIM in a statement on Thursday said it would allow Indian security agencies only to do legal monitoring of data of its subscribers, although India has asked the smartphone vendor to provide access to e-mail and messenger data.

"The only time it allows carriers to access the data sent via BlackBerry devices is in the case of national security situations, and even then, only as governed by the country's judicial oversight and rules of law," it said.

In Delhi, a Union Home Ministry spokesman said, "The meeting today asked DoT to convey to service providers and RIM that the BES and messanger services be made accessible to legal enforcement agencies (LEA) and a technical solution be found.

"If a technical solution is not found by August 31, government will review the position and take steps to block these two services. As of now, voicemail, SMS and BlackBerry Internet Services (BIS) have been made available to the LEA," the spokesman said.

Ahead of the meeting, a top official of RIM, which has a growing market, made a courtsey call on Home Minister P Chidambaram..