Common use of Name of Shareholder Clause in Contracts

Name of Shareholder. ▇▇▇▇ ▇. ▇▇▇▇▇▇ --------------------- Signature: /s/ ▇▇▇▇ ▇. ▇▇▇▇▇▇ ------------------------------- Address: ▇▇▇▇ ▇▇▇▇ ▇▇. --------------------------------- ▇▇▇ ▇▇▇▇▇▇▇▇▇, ▇▇ ▇▇▇▇▇ --------------------------------- --------------------------------- Fax No.: 915/▇▇▇-▇▇▇▇ --------------------------------- Date: 6/29/99 ------------------------------------ Accepted: VIP CALLING, INC. By: --------------------------- EXHIBIT A INSTRUMENT OF ADHERENCE Reference is made to that certain Second Amended and Restated Shareholders' Agreement dated as of July 12, 1999 (the "Agreement"), a copy of which is attached hereto, among VIP Calling, Inc., a Delaware corporation (the "Company"), and the Shareholders described therein (collectively, the "Shareholders"). The undersigned, in order to become the owner or holder of:

Name of Shareholder. ▇▇▇▇▇▇ ▇. Case III ----------------------- Signature: /s/ ▇▇▇▇▇▇ --------------------- Signature▇. Case III --------------------------------- Address: /s/ ▇/▇ ▇▇▇▇ ▇. ▇▇▇▇▇▇ ------------------------------- Address: & ▇▇▇▇▇ ----------------------------------- One ▇▇▇▇ ▇▇. --------------------------------- Street, 18th Floor ----------------------------------- ▇▇▇ ▇▇▇▇▇▇▇▇▇, ▇▇ ▇▇▇▇▇ --------------------------------- --------------------------------- ----------------------------------- Fax No.: 915/▇▇▇-▇▇▇-▇▇▇▇ --------------------------------- ----------------------------------- Date: 6/29/99 ------------------------------------ -------------------------------------- Accepted: VIP CALLING, INC. By: --------------------------- ------------------------------ EXHIBIT A INSTRUMENT OF ADHERENCE Reference is made to that certain Second Amended and Restated Shareholders' Agreement dated as of July 12, 1999 (the "Agreement"), a copy of which is attached hereto, among VIP Calling, Inc., a Delaware corporation (the "Company"), and the Shareholders described therein (collectively, the "Shareholders"). The undersigned, in order to become the owner or holder of: