Nortel Networks NN43001-301 manual Inspect the NTAK10 circuit card, Switch S1 Off Up On Down

Install DTI hardware 239

Inspect the NTAK10 circuit card

Inspect the circuit card before installing it in the Option 11C Cabinet or Media Gateway:

•Locate the NTAK10 2.0 Mb circuit card and carefully remove it from its packaging.

•Inspect the circuit card for any visible damage that occurred during shipping.

Set the switches

The NTAK10 incorporates four surface mounted dip switches. The following tables provide information on the various settings and related functions of these switches.

Note: The ON position for all the switches is toward the bottom of the card. This is indicated by a white dot printed on the board adjacent to the bottom left corner of each individual switch.

Set the switches on the circuit card according to the requirements of your installation.

Switch S1 - Clock Controller (CC) configuration

This switch enables and disables the onboard Clock Controller (CC).

Table 84

Switch S1

Switch	Off (Up)	On (Down)
S1-1	Spare	Spare
S1-2	Clock Controller	Clock Controller
	Enabled	Disabled

Switch S2 - Carrier impedance configuration

This switch sets the carrier impedance to either 1203/4 or 753/4. Twisted pair cable is usually associated with 1203/4. Coaxial cable is usually associated with the 753/4 setting.

Table 85

Switch S2

Switch	Off (Up)	On (Down)
S2-1	1203/4	753/4
S2-2	753/4	1203/4

Nortel Communication Server 1000

ISDN Primary Rate Interface Installation and Commissioning

NN43001-301 02.03 Standard

Release 5.5 7 December 2007

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