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Reply To: SS7 Signalling Dimensioning

#37068
albino
Guest

1. SS7 Link (64k) Load calcualtion
———————————-
MSU = 0-272 Octets
IAM = 100 Octets max.
————————–

56,000bits/sec.
40% load on one link
22,400 bits/sec
8 bits/octet
2,800octet/sec
3,600sec/hour
10,080000 octets/hour (load/link
———————————-
20,160,000 octets/hour (load/2link
100 IAM (octets)
201,600 IAM/Hour (/2links)

To be engineered for :
————————–
max. 0.4 Erl. /link (40%load)
up to 0.8Erl. in case of failure

2.VoiceTrunk(64k)Load Calculation
———————————
17,231 trunks (ds-o) …. ex.
70% usage
12,062 trunk usage
3,600 call sec.
43,422,120 call sec/h
200 average holding time
217,111 total attemps/h
72 octets/attemp
15,631,963 octets/h (sig.load ds0)
100 IAM (octets)
156,320 IAM/h(generated by a ds0)

64k 64k

SSP ——— STP ———- SSP
| link link |
——————————
voice trunks ( x DS0)