[b]1. Is 300 Avaya TSAPI lic sufficient?[/b]
No.
In normal call flow, GVP port should also "CTI-enabled" as well.
Otherwise, business attached data cannot be transferred along the call path
i.e., 300 agents + 90 GVP/IVRS port = 390
Note: if you have VTO (for busy treatment) or outbound dialer ports, add these number to "total" TSAPI license count
[b]2. Would we require another 300 Avaya Elite Agent lic ?
a) If YES, why is this lic still required since Genesys is now performing the intelligent routing to agents (and we dont need Avaya advance routing now) ?[/b]
In order to have Genesys URS to work, the feature "External host-based routing" is required in Avaya (the vector script command "adjunct"). The feature is bundled in the "Elite" (please do verify with your PABX supplier!)
[b] b) If NO, how would Genesys agents login via the Avaya hardphone, since a login via the hardphone would require 1 Avaya license? (e.g. if their workstation with the softphone is faulty)[/b]
Agent login license is different from Elite (advanced routing such as External host-based routing).
Soft-phone logins the hardphone via Genesys T-server (through TSAPI server, the CTI-link equivalence component). Thus, both soft-phone and hard-phone agent status should be synchronized.
In Genesys, 'soft agent login/mode' can be configured.
In most environment, hard and soft phones are synchronized (i.e., PABX side license) to cater fallback scenario.
[b]c. Any alternative Avaya lic (e.g Basic instead of Elite lic) ?[/b]
Don't recall on Avaya term; there was a "Delux" in the past.... again, please consult Avaya suppiler.
Other notes:
Genesys TSAPI T-server for Avaya is quite new...
Similar discussion can be found in
http://www.sggu.com/smf/index.php/topic,3105.0.html
If possbile, consult Genesys resellers, consultant or SE.