Common use of Switching System Hierarchy Clause in Contracts

Switching System Hierarchy. 5.2.1 For purposes of this Section 5.0 each of the following Central Office Switches shall be designated as a "Primary Switch": (a) Each Access Tandem Ameritech operates in the LATA; (b) The initial switch Focal employs to provide Telephone Exchange Service in the LATA; (c) Any Access Tandem Focal may establish for provision of Exchange Access in the LATA; and (d) Any additional switch Focal may subsequently employ to provide Telephone Exchange Service in the LATA which Focal may at its sole option designate as a Primary Switch; provided that the total number of Focal Primary Switches for a LATA may not exceed the total number of Ameritech s Primary Switches for that LATA. To the extent Focal chooses to designate any additional switch as a Primary Switch, it shall provide notice to Ameritech of such designation at least ninety (90) days in advance of the date on which Focal activates such switch as a Primary Switch. 5.2.2 Each Central Office Switch operated by the Parties which is not designated as a Primary Switch pursuant to Section 5.2.1 shall be designated as a "Secondary Switch". 5.2.3 For purposes of Focal routing traffic to Ameritech, sub- tending arrangements between Ameritech Primary Switches and Ameritech Secondary Switches shall be the same as the Access Tandem/End Office subtending- arrangements which Ameritech maintains for those switches. For purposes of Ameritech routing traffic to Focal, subtending arrangements between Focal Primary Switches and Focal Secondary Switches shall be the same as the Access Tandem/End Office sub-tending arrangements which Focal maintains for those switches.

Switching System Hierarchy. 5.2.1 For purposes of this Section 5.0 5.0, each of the following Central Office Switches shall be designated as a "Primary Switch": (a) Each Access Tandem Ameritech operates in the LATA; (b) The initial switch Focal employs to provide Telephone Exchange Service in the LATA; (c) Any Access Tandem Focal may establish for provision of Exchange Access in the LATA; and (d) Any additional switch Focal may subsequently employ to provide Telephone Exchange Service in the LATA which Focal may at its sole option designate as a Primary Switch; provided that the total number of Focal Primary Switches for a LATA may not exceed the total number of Ameritech s Ameritech's Primary Switches for that LATA. To the extent Focal chooses to designate any additional switch as a Primary Switch, it shall provide notice to Ameritech of such designation at least ninety (90) days in advance of the date on which Focal activates such switch as a Primary Switch. 5.2.2 Each Central Office Switch operated by the Parties which is not designated as a Primary Switch pursuant to Section 5.2.1 shall be designated as a "Secondary Switch". 5.2.3 For purposes of Focal routing traffic to Ameritech, sub- tending subtending arrangements between Ameritech Primary Switches and Ameritech Secondary Switches shall be the same as the Access Tandem/End Office subtending- sub-tending arrangements which Ameritech maintains for those switches. For purposes of Ameritech routing traffic to Focal, subtending arrangements between Focal Primary Switches and Focal Secondary Switches shall be the same as the Access Tandem/End Office sub-tending arrangements which Focal maintains for those switches.