IP Telephony and Phones

incoming call from fxo comes to a SIP Phones but when i am trying to transfer the call to another sip phones the call gets disconnected.voice service voipallow-connections h323 to h323allow-connections h323 to sipallow-connections sip to h323allow-co...

Hi, I'm looking at a QoS policy for our C1000 switches, In short, i need our Cisco phones trusted and also our workstations as we have configured a group policy that sets the DSCP markings for teams.exe to EF (46)   My question is which Auto QoS conf...

Hi,We are using the Cisco 7841 SIP. when a call is ringing in on the phone, we don't see a way to get another line for a dial tone and make a call. Pretty much we can't make a call when the phone is ringing. any idea?  thanksBenito

DearsI want to use 24 to 48 port FXS analog ports double wide module  on ISR router or on the VG450 analog gateway , but these will be connected to  Hawaii call manager, hence if it would have been CUCM or CME i would have add them as a device but wi...

My question is in regards to the phone model CP-8851. My group uses this phone with a shared phone line. I would like to know if there is a way to adjust the ringer setting so that the phones rings if I am not currently on a phone call, but the phone...

We detected on a customer that Cisco IP Phones are requesting DHCP in the data VLAN (as well as requesting DHCP in the voice VLAN). We see the logs on the DHCP server of those requests on the data VLAN (which get replied and an IP address and lease i...

We purchased several 8821s to start replacing our aging fleet of 7925G phones. The 7925G's work great, but unfortunately the 8821s are experiencing horrible issues. They randomly drop registration and will not pick back up.  This happens whether or n...

Hello i have the following problem: The users with sccp phones can pickup all the incoming calls. The users with SIP phone CP-8841 cannot pickup calls from sccp phones. Because the 10.5 CME does not support cp-8841 i have tried to work with "compatib...

Hi,Is it possible to configure PIN Code per user four outbound calls dial-peers?If yes how to, is there any documents that i can read?Best regards,Antra

We would like to use passive PoE for Cisco CP-7821 IP phones in a special application. Edit: By passive PoE I mean applying voltage without the standardized protocol that determines device class etc before the application of 48V. 1. Does the phone su...

Our customer would like to have implemented the following.User A calls from external to user B. User B answers the call. User B performs a blind transfer to user C. User C is also external. User C will display the phone number of user B, even after t...

HelloCurrently, an ASA firewall is installed in front of the H.323 Gateway.After installing the firewall, calls cannot be made during a call. All firewall policies are allowed.When talking on the phone, it is disconnected after a few seconds without ...