Distributed Communications System

B Private Networking

 

Branch-generated call-identification tones

 

 

The branch in a CAS network generates call-identification tones and transmits them

 

to the CAS attendant by way of the RLT. These tones indicate the type of call coming

 

from the branch or the status of a call extended to or held at the branch. The attendant

 

hears these tones in the console handset before being connected to the caller. The

 

tones may vary by country. See DEFINITY ECS Console Operations for information

 

on these tones.

 

 

CAS Outgoing Call Routing

 

 

The centralized attendant at the main has access, through RLTs, to all outgoing trunk

 

facilities at the branches in a CAS network. The attendant can extend an incoming

 

LDN call to an outgoing trunk at a branch by dialing the access code and allowing the

 

caller to dial the rest of the number or by dialing the complete outgoing number.

 

CAS Incoming Call Routing

 

 

Calls extended to busy single-line voice terminals at the branch wait automatically. If

 

there is a call in queue, the user hears a busy signal. When station hunting and send all

 

calls is administered, the call routes along the administered path. Not answering any

 

waiting extended call within an administered interval causes the branch switch to

 

return the call to the attendant. Call Waiting does not apply to multiappearance

 

terminals; if no appearances are available, busy tone is sent to the attendant, who tells

 

the caller that the line is busy.

 

 

Calls from voice terminals at the branch to an attendant also route over RLTs seized

 

by the branch switch. A branch caller reaches the attendant by dialing the

 

attendant-group access code. The access code is administrable; the default is 0. The

 

conversation between the branch caller and the attendant ties up the seized RLT, but

 

calls of this type are usually short.

 

 

If an extended call returns to the main attendant unanswered, the called party at the

 

branch does not drop but continues to be alerted until the caller releases. This allows

 

the attendant to talk to the caller, then extend the call again, if the caller wishes,

 

without redialing the number.

 

Considerations

Branch Attendants

 

 

A branch can have an attendant. Access to the branch attendant must be by way of

 

an individual attendant extension. Incoming trunk calls in a CAS network can

bypass branch attendants but can be routed back to them by the centralized attendant.

Branch calls terminate on the CAS main switch based on the incoming RLT trunk-group day-destination or night-service destination. An attendant console is not always answering or extending incoming CAS calls. If someone other than an attendant answers a CAS call, that person can extend the call back to the branch by pressing the FLASH button on a multiappearance voice terminal or flashing the switchhook on a single-line voice terminal. The branch reaction to Flash Signals and the branch application of tones is the same whether an attendant or someone other than an attendant answers or extends the call.

 

 

Administration for Network Connectivity

340

CID: 77730

555-233-504 — Issue 1 — April 2000

Page 360
Image 360
Lucent Technologies Release 8.2 manual Branch-generated call-identification tones, CAS Outgoing Call Routing