I have several questions about my project to upgrade a very old PBX @ a client site with a UC540. Site Details:
CBeyond "Beyond Voice 1 (BV1)" phone provider, one main dial in number (no DID's, just internal extensions). All calls ring on every phone and anyone can answer, 6 Call apperances on each phone. Service allows 6 simultaneous calls in/out. BV1 service is a dynamic integrated service (voice and data, sharing bandwidth where needed).
Onsite SBS2003 server for all data, 6 computers with Windos XP or 7 and Office 2007.
CBeyond provides Firewall/NAT services (read managed by CBeyond). CBeyond CPE (Cisco IAD) splits voice and data. Voice interface is analog to current PBX.
Here is my planned design:
Install UC540 on separate network leveraging dedicated Cat5e cables to each phone connected to POE ports on UC540. Connect UC540 WAN port to existing network to allow it Internet access.
I understand this is not ideal and not using the power of the UC540 but I do not have the ability to make large changes to the data network. I also have to consider the managed Firewall/NAT @ Cbeyond instead of a dedicated device that the UC540 could replace.
My questions are:
1) UC540 has 4 FXO ports, does that mean I can only have 4 simultaneous calls in/out (asuming the analog interface to CBeyond)?
2) Given the SBS 2003 and Office 2007, what integration options do I have (like voicemail to email, etc) if I were to fully implement the UC540 (I'm assuming not much becuase of Exchange 2003).
3) Do you have any suggestions of a better design?