NEC SL1100 Features And Specifications Manual page 244

SL1100
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 = PRG 24-02-07 or DISA = PRG 25-07-07), a warning tone is
heard and the user dials # (PRG 20-28-01) to extend the conversation.
3. After three minutes (PRG 20-28-03), the warning tone is heard again. After 30 seconds (Tandem
Trunking = PRG 24-02-10 or DISA = PRG 25-07-08), the call is disconnected.
Conditions
• The DISA caller must use an analog (DTMF) telephone. DISA is compatible with calling devices that
meet the DTMF signaling requirements of EIA Specification RS-464. DISA trunks must be
supervised loop start.
• The Continue/Disconnect code must be DTMF.
D
• With an analog trunk, the Continue/Disconnect code may work using DTMF sounds from the
opposite side trunk. With an ISDN trunk, PRG 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 DTMF receivers are busy.
• When used with the Networking feature, both systems must be programmed the same.
• In a system with ARS enabled:
When a DISA caller dials 9 for an outside call (if allowed), the system routes the call via ARS.
• In a system with ARS disabled:
When a DISA caller dials 9 for an outside call (if allowed), the system uses the routes programmed
for Trunk Group Routing.
• Transferred calls on DISA, DID, DIL, ISDN trunks, or from the VRS can display the reason a call is
being transferred (Call Forward, Busy, No Answer or DND).
• Long conversation cutoff is controlled separately for manually transferred Tandem Trunk calls,
automatically transferred Tandem Trunk calls, and DISA calls.
• Tandem Trunking also uses the Continue/Disconnect codes DISA uses.
• Department Calling with Overflow Message requires PZ-VM21 for VRS.
• DISA can only be set to call forward to another extension. Call Forward Off-Premise is not
supported.
• When the DISA/VRS Ring Group Transfer (PRG 25-03 and PRG 25-04) are set to 104 (Speed Dial
Bin), the Speed dial is treated as an internal call no matter what PRG 13-01-01 is set to. If an
outside number is required, the trunk access code must be put into the speed dial bin.
Default Settings
Disabled
System Availability
Terminals
Remote Analog DTMF telephones
Required Component(s)
InMail (for Announcements)
1-232 Direct Inward System Access (DISA)
ISSUE 2.0