R2511-HP MSR Router Series Voice Configuration Guide(V5)

75
Desi
g
nation Basic Meanin
g
A-2 Send last but one digit
A-3 Address-complete; changeover to reception of Group B signals
A-4 Congestion in the national network; terminate interregister signaling exchange
A-5 Send calling party’s category
A-6
Address-complete; terminate interregister signaling exchange, charge, and set up
speech conditions
A-7 Send last but two digits
A-8 Send last but three digits
A-9 Spare for national use
A-10 Spare for national use
A-11 Send country code indicator
A-12 Send language or discrimination digit
A-13 Send nature of circuit
A-14 Request for information on use of an echo canceller
A-15
Congestion in an international exchange; terminate interregister signaling
interaction
• Group II forward signals—Identify the calling party category. The system looks at the calling party
category to decide whether the calling party can perform forced release or break-in.
Table 9 Group II forward signals
Desi
g
nation Basic Meanin
g
II-1 Subscriber without priority
II-2 Subscriber with priority
II-3 Maintenance equipment
II-4 Spare for national use
II-5 Operator
II-6 Data transmission
II-7 Subscriber (or operator without forward transfer facility), for international use
II-8 Data transmission (for international use)
II-9 Subscriber with priority (for international use)
II-10 Operator with forward transfer facility (for international aid use)
II-11 through II-15 Spare for national use
• Group B backward signals—Identify the state of the called party, and acknowledge Group II
signals and control connection.