Overlap Receiving - Q-Sig - NEC Univerge SV8300 Manual

Overlap Receiving - Q-SIG

General Description
Overlap Receiving is available for an incoming call to the SV8300 from Q-SIG network.
Overlap Receiving is a procedure, used in call establishment of an incoming call, to enable the network to send
called party number digits to the user in successive messages, as and when they are made available from the
remote network.
Operating Procedure
No manual operation is required.
Service Conditions
■ General Conditions
1. This feature conforms to following ETSI standard.
ETS 300 172
2. The PRI blade is required.
3. After ORT timer/T302 timer (14-16 seconds) is out, the SV8300 connects or disconnects a call according
to the system data programming. When the maximum number of digits has been received, the call is con-
nected. When the received digits do not reach the maximum digits or exceed the maximum digits, the num-
ber is treated as an unallocated number.
Note: ORT timer is variable (default: six seconds), and should be set to 14-16 seconds for T302 timer in system
data programming.
4. Connectable bearer services are Speech/3.1KHz audio. Unrestricted digital is not connectable.
5. Maximum digit number received from Q-SIG network must be set in system data programming.
6. When the received digits from Q-SIG network exceed the maximum digit number set by system data, the
SV8300 connects or disconnects a call according to the system data programming.
7. When the sending complete information element is received in SETUP message or INFO message, the
SV8300 connects the call at that time even the received digits do not reach the maximum digit number set
by system data.
8. When the sending complete information element is not received in SETUP message or INFO message, the
SV8300 connects the call at the time when the maximum digit number set by system data is received.
9. The maximum number of receiving digits in SETUP or INFO message is 32 digits.
UNIVERGE SV8300 Features and Specifications Manual (ISDN/Q-SIG)
NWA-033632-001, Issue 1
Overlap Receiving - Q-SIG
Page 37