2130-3400 dBm, 330-1150 Hz or 2130-3400 Hz. Hz. 4. Backward detector: Any 2 4. Backward detector: Any 2 pure sine waves, each at -5 pure sine waves, each at -5 dBm, 1300-3400 Hz. dBm, 1300-3400 Hz. - -------------------------------------------------------------------------------------------------------- Transmitted signal interference Must not falsely detect due to Must not falsely detect due to generation of outgoing MF generation of outgoing MF digits. digits. - -------------------------------------------------------------------------------------------------------- Table A-14: MFD R2 Detection Performance Requirements A.7 MFcR2 compelled signaling In order to pass the CCITT requirements for compelled signal timing, the following additional requirements are made on the MFD detector: 1. The MFD detector shall detect the leading edge of an R2 digit after processing no more than 24 ms of the digit. 2. The MFD detector shall detect the trailing edge of an R2 digit after processing no more than 16 ms of the silence following the digit. Software License D2 Technologies, Inc. and Maintenance Agreement August 4, 1997 CONFIDENTIAL 43 EXHIBIT B LICENSEE PRODUCT DESCRIPTION Service Resource Module (SRM) for high density programmable switching systems. Software License D2 Technologies, Inc. and Maintenance Agreement August 4, 1997 CONFIDENTIAL 44 EXHIBIT C DEVELOPMENT, MAINTENANCE, AND RUNTIME LICENSE FEE SCHEDULE DEVELOPMENT LICENSE FEES: LICENSED TECHNOLOGY FOR THE BASIC SERVICES SPECIFIED IN EXHIBIT A Development license fees are specified in PO #104962. 50% of which has already been paid to D2 and the final 50% to be paid upon the delivery and acceptance of the Licensed Technology for Basic Services by Licensee in accordance with Article 4 of this Agreement. MAINTENANCE FEES: LICENSED TECHNOLOGY FOR THE BASIC SERVICES SPECIFIED IN EXHIBIT A The Maintenance Fee after the expiry of the Warranty period shall be $20,000 per year, starting from the date after the Warranty period (Contract Year), renewable at the end of each Contract Year.