Instruction manual

QSIG
Issue 4 May 2003 149555-233-767
Manufacturer-specific supplementary services can be created using specific
operations encoded with the manufacturer’s identifier. Communication Manager
supports non-QSIG applications that transport information across QSIG networks
in MSI. Applications have the same functionality over QSIG networks that they
have over non-QSIG networks. Applications that use MSI include Centralized
Attendant Service, Transfer to Audix, Best Service Routing, and QSIG VALU.
Message Waiting Indication (MWI)
The system indicates that a guest’s phone has received one or more messages in
their voice mailbox. An automatic message waiting lamp light at the called party’s
telephone.
Name and number identification
Allows a switch to send and receive the calling number, calling name, connected
number, and connected name. Additional parameters that control the display of
the connected name and number are administered on the Feature-Related
System-Parameters form. QSIG Name and Number Identification displays up to
15 characters for the calling and connected name and up to 15 digits for the calling
and connected number across ISDN-PRI interfaces.
Path replacement with path retention
With this feature, a call’s connections between switches in a private network can
be replaced with new connections while the call is active. This feature is invoked
when a call is transferred and improvements may be made in costs.
For example, after a call is transferred, the two parties on the transferred call can
be connected directly and the unnecessary trunks are dropped off the call. The
routing administered at the endpoints may allow for a more cost-effective
connection.
Earlier versions of DEFINITY could not route a call over the original trunk when
path replacement was turned on. Path Replacement features Path Retention, which
allows Communication Manager to use the original trunk group path when the
routing analysis performed by the switch shows the original trunk group to be the
best route.