I'm a bit confused about E1 in America. But anyway your project looks interesting, and I have experience in many SS7 implementations. Please contact me via chat to discuss technical details of your project.
I work many project . i have 4 year od ex in networking devices.
ciena , cisco asr, alkatel, huawe devices i worked and protocol like isis, ospf , eigrp, bgp i worked .
i m the best candidate for that . i have time Lagi