Inter and Intra System Handoff
Inter System Handoff:
• If during ongoing call mobile unit moves from one cellular system to a different cellular system which is controlled by different MTSO, a handoff procedure which is used to avoid dropping of call is referred as Inter System Handoff.
• An MTSO engages in this handoff system. When a mobile signal becomes weak in a given cell and MTSO can not find other cell with in its system to which it can transfer the call then it uses Inter system handoff.
• Before implementation of Inter System Handoff MTSO compatibility must be checked and in Inter System Handoff local call may become long distance call.
Intra System Handoff:
• If during ongoing call mobile unit moves from one cellular system to adjacent cellular system which is controlled by same MTSO, a handoff procedure which is used to avoid dropping of call is referred as Intra System Handoff.
• An MTSO engages in this handoff system. When a mobile signal becomes weak in a given cell and MTSO find other cell with in its system to which it can transfer the call then it uses Intra system handoff.
• In Intra System Handoff local calls always remain local call only since after handoff also the call is handled by same MTSO.
Read more about this topic: Handover
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