# Flash - Trunk (for Centrex Feature Access)

## Description

Trunk Flash lets you single or double flash a trunk to request Centrex features.

TIP: Once a user receives dial tone from the CO (after flashing a trunk), the system cannot restrict dialing.

## Conditions and Feature Interactions

- Trunk Flash is supported for the following types of trunks:

- LS/GS CO

- E&M

- T1 DID/TIE

- T1 E&M

- T1 CO

- For analog trunks:

- Trunk Flash is supported for both LS and GS trunks on the LS/GS trunk card.

- Trunk Flash is supported for LS trunks on all other analog trunk interfaces in the MiVoice Business system.

- MSDN or DASSII trunks do not support Trunk Flash.

- DISA callers cannot use Trunk Flash.

- To initiate this feature, you must be in talking state on the trunk that is to be flashed with no one on Consultation Hold. You cannot initiate the feature if you are in a conference unless the conference uses the far end's conference capabilities.

- A Symbol Wireless phones cannot initiate this feature.

## Programming

1. Enter the duration of the single trunk flash or each of the flashes for a double trunk flash in the Flash Timer field of the appropriate Trunk Circuit Descriptor form. For a double flash, the time between flashes is hard-coded at one second.

2. Class of Service Options form

- Enable Trunk Flash Allowed for both the telephone that will perform the flash and the trunk that will be flashed.

3. Feature Access Codes form

- If you intend to use a feature access code in Operation, assign the Trunk Double Flash and Trunk Single Flash codes

4. Multiline Set Keys form

- If you intend to use a feature key in Operation, program a Single Flash and a Double Flash key or use Superkey (see Feature Keys for more information on Superkey programming).

You can insert a Trunk Flash into a System Speed Call by using the flash character ( f or F). You can insert a Trunk Flash into a Personal Speed Call or Speed Call Key by using the Flash key, Trans/Conf key, or Insert Flash softkey. Note that you cannot program a flash into a Speed Call Key in the programming forms.

NOTE: When programming Speed Call on 5320/5320e, 5330/5330e, 5340/5340e IP Phones, pressing quickly the '#' button twice, inserts the flash character (F).

## Device Support

- Supported on all devices.

## Operation

#### IP Console Applications(MiVoice Business Console)

To flash a trunk:

- Dial the Trunk Single Flash or Trunk Double Flash Feature Access code.

#### 5010 IP Phone, 5020 IP Phone, 5207 IP Phone, 5215 IP Phone, 5215 IP Phone (Dual Mode), 5220 IP Phone, 5220 IP Phone (Dual Mode), 5312 IP Phone, 5324 IP Phone, 5320/5320e IP Phone, 5330/5330e IP Phone, 5340/5340e IP Phone, 5360 IP Phone, Navigator, TeleMatrix 3000 IP Phone, 69xx IP Phones, 5560 IPT, 5540 IP Console

To flash a trunk:

- Press the Flash - Single or Flash - Double feature key.

#### 5304 IP Phone, 5212 IP Phone and 5224 IP Phone

To flash a trunk while on an outside call:

1. Press Trans/Conf or .

2. Dial the Trunk Single Flash or Trunk Double Flash Feature Access code.

3. Wait for dial tone.

4. Dial the Centrex feature access code.

#### OpenPhone 27

To flash a trunk:

- Press .

- Dial the Trunk Single Flash or Trunk Double Flash Feature Access code.

- Wait for dial tone.

- Dial the Centrex feature access code.

#### SpectraLink Wireless Telephones

To flash a trunk:

1. Press FCN then press 1.

2. Dial the Trunk Single Flash or Trunk Double Flash Feature Access code.

3. Wait for dial tone.

4. Dial the Centrex feature access code.

Related Topics

- Direct Inward System Access

- Flash - Calibrated

- Flash - Switchhook