State and explain the various performance services offered by SS7 protocol.

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teamques10 ★ 68k

Touch star: It is also knows as CLASS. it is a group of switch controlled services that provides its users with certain call management capabilities. It provides services such as call return, call forwarding, repeat dialing, call block, call tracing and caller ID.
800 services: It was introduced by bell system to provide toll-free access to the calling party to the services and database which is offered by private parties. cost associated with the processing of calls is paid by the service subscriber. 800 service is offered under two plans:

800-NXX plan: The first 6 digits of an 800 call are used to select the interexchange carrier (IXC)
800 database plan: the call is looked up in the database to determine the ppropriate carrier and routing information.

Alternate Billing service and Line information Database(ADB/LIDB): These servicess uses the CCS network to enable the calling party to bill a call to a personal number (third party number, calling card, or collect etc.) from any number
Performance of SS7:

Performance of signalling network is studies by connection set-up time (response time) or the end-to -end signalling information transfer time. The delays in the signalling point (SP) and the STP depend on the specific hardware configuration and switching software implementation.
Congestion control in SS& networks: with the increase in subcribers it is important to avoid congestion in the signalling network under heavy traffic conditions SS& networking protocols provide several control schemes, allowing traffic to avoid failed links and nodes.

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