Instruction manual

Features
Direct Inward System Access (DISA)
68 Strata CTX General Description 10/04
• ISDN extension terminal (Audio and Speech)
• ISDN trunk/Tie line (Audio and Speech)
• Conference circuit
• Holding music source
• External paging device
Direct Inward System Access (DISA)
System Availability: All systems
Direct Inward System Access (DISA) allows outside callers to connect to the Strata CTX and
make station or trunk calls as if they were stations within the system. An incoming call may be
directed to DISA by Direct Inward Dialing lines, ground/loop start lines or Automated Attendant.
Note DISA lines require DTMF receivers.
DISA security code is changeable from a specific station. The station to change the security code
needs to be allowed by Class of Service. This security code can also be changed using the Strata
CTX WinAdmin administration console.
DISA provides access to the features listed below:
• Station Calls
• Station Calls over Private Network
• Attendant Access
• Account Codes
• Tie lines
DISA also provides access to these features, which require a security code:
•LCR
• Direct line access
• Outgoing line group access
•Emergency Call
• Call Forward Remote Control
Directory Numbers
System Availability: All systems
A Directory Number [DN], sometimes called an “extension number,” is the number someone must
call to reach a destination within the system. Each [DN] is assigned to a flexible button on a digital
telephone or as the main directory number of a standard telephone. To maximize call coverage
flexibility. Any [DN] can appear on multiple telephones. Also, individual telephones can have
multiple [DN] buttons with different Directory Numbers.
The system provides Primary and Phantom [DN] buttons on telephones. All [DN] buttons can be
used to originate and answer calls. If you press a [DN] while on a call, it releases the existing call
and provides dial tone to make another call.