Research In Motion will provide India with technical solutions next week to help read its encrypted data that New Delhi sees as a security threat, a senior government source said on Friday.
The assurance raised hopes that India might withdraw its threat to ban messenger and encrypted e-mail.
India has given RIM, the maker of the popular BlackBerry smart phone, until Aug. 31 to comply with a request to gain access to encrypted corporate e-mail and messaging services or those services will be shut.
RIM is under pressure from governments around the world to give access to its codes. Other firms have also faced scrutiny since officials intensified their fight against Islamic militants misusing mobile devices.
"They have assured that they will come with some technical solution for messenger and enterprise mail next week," the government source said. "Our technical team will evaluate if it works."
The source, who spoke on condition of anonymity, also said the government had concerns over Internet telephony and would take it up with companies such as Skype.
Earlier in the day, BlackBerry officials met Indian authorities, now pledged to go after firms, including Google, to keep the world's fastest growing mobile phone market safe from militants and cyber spying.
After the meeting, Robert Crow, a vice president at BlackBerry, expressed optimism that the company would resolve India's worries. "It is a step in a long journey," he said.
Pakistani-based militants used mobile and satellite phones in the attacks on Mumbai in 2008, which killed 166 people. The militants were suspected of using Internet telephony, which is widely available.
The authorities have for more than a year been looking at Google's messaging, Skype and other providers of communication in India.
"Wherever there is a concern on grounds of national security the government will want access and every country has a right to lawful interference," a senior interior security official, who declined to be identified, told Reuters.
India has already forced mobile phone operators, including leading Bharti Airtel, to follow strict import rules when buying telecoms network equipment.
Chinese manufacturers Huawei Technologies and ZTE Corp have been temporarily prevented from shipping network equipment for fears of embedded spyware.
"We have concerns regarding these (Google and Skype) services on grounds of national security and all those services which cannot be put to lawful interference," the same source said.
India's demands follow a deal with Saudi Arabia, where a source said RIM agreed to give authorities codes for BlackBerry Messenger users. The United Arab Emirates, Lebanon and Algeria also seek access.
How much brinkmanship is involved remains to be seen. Not one country recently threatening to ban BlackBerry corporate e-mail or messaging services has carried through with the threat.
"We don't expect a ban actually. There will be some solution before the deadline," said a senior official with a mobile phone operator in India, who did not want to be identified.
Officials say RIM had for a time proposed tracking e-mails without sharing encryption details, but that was not enough.
India, like other countries, has been criticized for seeking blanket restrictions while mobile phone operators say they have to offer consumers privacy and secure communications.
India is also keen to retain its position as one of the world's fastest growing IT nations.
Competitors have eaten into RIM's once-dominant share of the North American smart phone market, pushing the company to look to places like India and Saudi Arabia for growth.
A shutdown would hit one million users in India out of the smart phone's 41 million users, allowing them to use the devices only for calls and Internet browsing.
RIM, unlike rivals Nokia and Apple, operates its own network through secure servers located in Canada and other countries, such as Britain.