ASCOM Ascotel 2025 System Manual page 1133

ascom Ascotel 2025/2045/2065
Transit PINX
Transmission Control Protocol (TCP)
Type of Number (TON)
Tone signalling in the handset:
• Idle tone / exchange free-to-dial tone
– Continuous tone obtained when pick-
ing up the handset
• Ring-back tone
– Wait until the call is answered
• Busy tone
– Destination subscriber is busy
• Acknowledgement tone
– After initiating various functions
• Call waiting tone
– Another subscriber is signalling "call
waiting" into the current conversation
• Congestion tone
– Feature or authorization not available.
– Destination subscriber not available
• Conference tone
– During conference calls or intrusion
• Ringing tone via a paging system
9.16 Glossary
A PINX acts as a transit PINX for the duration of a connection
if it routes that connection from one PINX to another PINX.
TCP is a connection-oriented transport protocol used for con-
trolling the transmission. It supports the functions of the trans-
port layer and sets up a connection between the entities prior
to data transmission.
Parameter used for classifying a call number
• Parameter values, if the call number corresponds to a NPI =
E.164:
unknown/subscriber/national/international.
• Parameter values, if the call number corresponds to an
NPI=PNP:
unknown / level 0 / level 1 / level 2
HBT_20321104_09/B0_en