IPO 500 With CISCO 2811 SIP Trunk Call Drop after 20 Sec

[jbinh]

Hi,
We have successfully connected multiple Avaya IPO 500 V1 and V2 with Cisco 2811 via SIP trunks. Everything is fine with Avaya IPO 500 V2 R8 but with Avaya I PO 500 V1 R5 outgoing calls get disconnected after 20 seconds. There is no firewall. Could any one help me in this regard.


Regards,

Junaid bin Hassan

[furrerm]

Why not upgrade the r5 to r8?

[jbinh]

because R8 requires IP End Point Licenses whereas R5 does not.