VPN Phone Configuration

[Siva chinap]

I am bit confused,

The scenarion i have Call manager version 9.1 running in Dubai,we have a two branch site in UK & newyork,between sites not interconnected.communication through VPN,user from Dubai goes to Branch site (UK),if they want to  make a call from UK  logging into Jabber client makes an extension calls ,instead of that users required a deskphone to make a call.

Should any one suggest me what are thing required to be done this task?

[Siva chinap]

Any Body have configured ?

[Chris Deren]

I am not following your question, can you describe exactly what your requirement is?

Chris

[Siva chinap]

I want to access the Deskphone phone though VPN,there is no wan connectivity between two sites,

in branch site no CUCM,some users move to branch sites if they want to make a call to HQ site instead of jabber client,they need to use Deskphone through VPN.

[bernhardczapp]

There is a feature called Phone VPN.

The IP Phone detects if it is inside the LAN and is able to register to CUCM.

If this is not possible the phone estabishes a SSLVPN (to a Cisco ASA) and communicates through this vpn.

When this feature is configured you can take your phone to any internet connection.

See details and restrictions here:

https://supportforums.cisco.com/docs/DOC-9124

[Siva chinap]

Bernhard,

Thanks for your information,i will configure now.

Wat about call quality over the internet?

[bernhardczapp]

Quality can not be assured.

Depends on delay, jitter and packet loss...

I would try to use codec iLBC.

iLBC is relatively robust to packet loss and doesn't need as much bandwith as g.711 / g.722.