[Asterisk-Users] Question about codecs and interoperability with cisco AS5350

[Anton Tinchev]

Hi all.
I'm going to implement some large Asterisk based solution. Maybe 4-5 PCs with 1-2 E1/T1 trunks on each.
Because some of the traffic will be sended to external VoIP provider, i has some questions

1. Which is the lowest bandwidth consuming codec in Asterisk, which is compatible with Cisco Gateways. Stability is needed too.

2. Have someone allready bulded such a systems and what hardware (pc i mean) is needed

Thanks