Why was MGCP developed when we already had H.323 & SIP?
I can understand that H.323 has complex debug messages and its tough to debug failures, SIP resolved that issue by having simple text message/response and had better services implemented on SIP stack.
But the question is what was the need of development of MGCP stack when H.323 & SIP were dominant in market, how does it makes VoIP network different and better for end user & is it better than H.323 & SIP network??
Any pros & cons will be appreciated..
Its not a assignment question so pointers and subjective replies will do good.
Thanks in advance

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Well, not a technical response because I am not in that particular field. But you should expect new standards being created forever, because people are payed to work on them. Once a new standard stands out, companies stop supporting the old one. And they achieve new sales on the new exclusive standard.