TELEPHONE INTERFACE MODULE (TIM)

F2 Manual Device Control/Setup

F4 User Setup

F6 Diagnostic Control

YDisplays digits in alarm display Enter, Enter

Select F10 until the main menu is displayed All digits, both in-bound and out-bound are displayed on the Alarm Display.

14.8DID SETUP AND ALIGNMENT (-660)

14.8.1DID PERSONALITY CARD JUMPER SET- TINGS

Table 14-6 DID JUMPER PLACEMENT

JU

Pin

Description

 

 

 

J205

 

Line default disable mode - RING

 

1 only*

Open line

 

1 to 2

Default to ground

J206

 

Line default disable mode - TIP

 

1 only*

Open line

 

1 to 2

Default to ground

J207

 

Dial Tone or Mobile Speech Det.

 

1 to 2

Dial Tone Detect

 

2 to 3

Mobile Speech Detect

 

1 only*

Not Used

J208

 

Fuse Holder

J209

 

Transmit Gain

 

1 to 2

No Gain

 

1 only*

+6 dB Gain

DID line connections - Tip, P1, pin 31 Ring, P1, pin 32

* Indicates normal operation.

14.8.2 PRE-ALIGNMENT

The Central Office (CO) typically provides a dial up Test Tone (TT) and a Silent Line (SL). The DID alignment is more difficult since the line does not allow outward dialing, but the DID can still be aligned.

The TT from the CO is typically the maximum level the line will output or accept. The typical level is 0 dBm at the CO interface. The average level of speech on the line will typically be -13 to -16 dBm.

The TIM should be pre-aligned using the Basic Board Module alignment procedures, Section 7.3.

Input With Personality Card Installed

1.Insert 1004 Hz at -12 dBm with a 600 ohm driving impedance into the EQU of J1.

NOTE: Be sure to block the DC voltage provided by the DID by using a non-polarized 2.2 ∝F capacitor with a working voltage greater than 63V.

2.Set S5 for Test 7 ( sections 1, 2 and 3 open, close 4).

3.Reset the module, Press S2 and release.

4.Adjust R41 for -6 dBm ±0.5 dB at J11.

5.Verify -6 dBm ±1 dB at TP5.

6.Adjust R214 on the personality card for -12 dBm ±1 dB at TP203 (DTMF input level).

7.Set S5 for normal operation (all sections closed).

8.Reset the module, Press S2 and release.

Output

1.Place a 600 ohm resistor in series with a non-polar- ized 2.2 ∝F capacitor, 63V breakdown or greater in EQU of J1.

2.Set S5 for Test 1 (section 1 open, close 2, 3 and 4).

3.Reset the module, Press S2 and release.

4.Adjust R83 for -3 dBm ±0.5 dB at TP3.

5.Adjust R44 to be -9 dBm ±1 dB at J12.

(This provides a maximum level of -13 dBm ±2 dB across the line. The loss is due to the hybrid trans-

former. Verify the level across the 600 ohm resistor and 2.2 ∝F cap is -13 dBm ±2 dB, measure with a balanced non-grounded AC voltmeter.)

a.DTMF Output Level:

b.Set S5 for Test 3 (sections 1-2 open; 3-4 closed).

c.Reset the module, Press S2 and release.

14-15