NEC SL1000 Features And Specifications Manual page 495

ISSUE 1.0
• Program 20-28-03: 180 (Conversation Continue Time)
• Program 24-02-07: 600 (Only used with Trunk-to-Trunk Transfer Release Warning Tone)
• Program 24-02-10: 30 (Only used with Disconnect Trunk-to-Trunk)
• Program 25-07-07: 600 (Long Conversation Warning Tone Timer)
• Program 25-07-08: 30 (Long Conversation Disconnect)
1. An external call connects to an external number (either by transferring with Tandem Trunking or
by DISA caller).
2. After 10 minutes (Tandem Trunking = Program 24-02-07 or DISA = Program 25-07-07), a warning
tone is heard and the user dials # (Program 20-28-01) to extend the conversation.
3. After three minutes (Program 20-28-03), the warning tone is heard again. After 30 seconds (Tan-
dem Trunking = Program 24-02-10 or DISA = Program 25-07-08), the call is disconnected.
Conditions
• Tandem Trunking requires loop start trunks with disconnect supervision.
• The maximum number of simultaneous trunk-to-trunk conferences allowed is determined by the Con-
ference feature setup. Refer to the Programming section for this feature.
• The Continue/Disconnect code must be DTMF.
• With an analog trunk, the Continue/Disconnect code may work using DTMF sounds from the oppo-
site side trunk. With an ISDN trunk, Program 14-01-25 must be enabled to detect the Continue/
Disconnect code.
• The Continue/Disconnect code is not accepted while dialing a trunk.
• Continue/Disconnect codes do not work if all receivers are busy.
• A trunk can be set up to automatically tandem trunk/forward to an outside telephone number or
Speed Dial - System/Group Dialing bin.
• Other programmed options for incoming and outgoing calls can affect how calls are handled. Refer to
Central Office Calls, Answering/Central Office Calls, Placing and check or program these options as
needed.
• DISA calls also use the same Continue/Disconnect codes.
• After initiating an unsupervised conference, selecting one of the line keys allows you to barge-in to
the conference.
• If the station that barges into an unsupervised conference hangs up, the conference is terminated.
• A Trunk-to-Trunk transfer can be established by the following operation:
1. While talking to an outside party, press Hold.
2. Access a second outside line and dial the desired number.
3. Press Transfer to complete the Trunk-to-Trunk transfer.
When the second call is to be transferred to another station (Not Trunk-to-Trunk), the user should press
Hold at step 3, then dial the desired station, and press Transfer to complete the transfer.
Default Settings
Disabled
System Availability
Terminals
Multiline Terminals and Single Line Telephones
Required Component(s)
None
Features and Specifications Manual
SL1000
T
1-487