card BPRA2 - Alcatel 4400

Product : Alcatel 4400.

Part involved : card BPRA2.

Summary card : It manages E1 functions into PBX through card named BPRA2, some suppliers and carrier operators call it as "primary".

Scenario : Tuning card with link carrier operator of Telefónica del Perú, calling party drops with seemingly no reason.

Company : Ministry of Health of Perú.

Reference date : October 2006.

The card can be pull out from PBX cabinet in hot with no problems, of course with no calls. If your PBX has several cards of this type check that configuration are the same in all of them.

The balance parameter has two jumpers.

The impedance (impedancia in picture) parameter has three jumpers.

Every jumper has three pins, the counting pin is from the upper to lower side of picture.

Impedance jumper, pin 1 and 2 = 120 ohms

Impedance jumper, pin 2 and 3 = 75 ohms

Balance jumper, pin 1 and 2 = with balance

Balance jumper, pin 2 and 3 = without balance

Carrier operator Telefónica of Perú in E1 link uses "75 ohms with balance"

Connect to PBX through mtcl user and check the results typing the next command :

trkstat -r 0 (trunk number)

Review the parameter LOS, a successfull work shows the value 0 and that means a solid link established.