Hello,Our aim is to install our Cisco CallManager Cluster (4.3) and Unity Voice-Mail Server (4.1) behind a Firewall.Can somebody please tell me if there are other ports I need to enable to establish communication between our 7941 and 7961 Handsets an...

Hello,Just a very quick one here...Using CCM 4.3 and SCCP Signalling.Can somebody please let me know the answer to the following?We aim to use authenticated signalling and media (voice Stream)with the CAPF CTL Client Application with Locally Signific...

Hello,We will very soon be upgrading from CCM 4.1.3 to version 5.1.1.bWe will also be changing IP Handset signalling from SCCP to SIP.My question is:-We are currently using 4940G and 7960G Handsets but we need to implment various security standards s...

Hello,We have had a number of calls and entries into QRT Database complaining of Talker Echo on Calls to the PSTN.Some of the time the same PSTN numbers appear more than once both called and calling.Because of this I used a 7940 Phone to send out a T...