Configuring Vitelity SIP with Cisco 7940/7960

On May 25, 2011, in Technology, by Mike Waldron

Took me several hours to figure this out, but here are the configuration items you’ll need below to get your Cisco 7940 or 7960 working with Vitelity’s SIP service.  This configuration is for a phone that is behind NAT.  You do not need to specify your external NAT address as long as the NAT entries in the second part are included in the configuration – this is important if you have an ISP that changes your public/Internet IP at regular intervals (DHCP addressing, not static). Vitelity’s proxy will figure out your public address.

Note the “vitelity_username” can be either your Main account or a sub-account off the primary.  I created two identical appearances on two lines (although only line1 is displayed in the config example below).  You will need to change the username/password/proxy to whatever your Vitelity settings are for your account.

line1_name : “vitelity_username”
line1_authname : “vitelity_username”
line1_password : “vitelitypasswordhere”
line1_shortname : “LineName”
line1_displayname : “8881112222”
proxy1_address : “”
proxy1_port : 5060

outbound_proxy : UNPROVISIONED
outbound_proxy_port : 5060
nat_received_processing : 1
nat_enable : 1
nat_address : “”

start_media_port : 16384
end_media_port : 20000

preferred_codec : g711ulaw
dtmf_outofband : avt
dtmf_avt_payload : 101
dtmf_db_level : 3
dtmf_inband : 1

Assign your Cisco 7940 or 7960 a static IP on your LAN and forward 5060 TCP and 10000-20000 UDP to that IP from your firewall.

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4 Responses to Configuring Vitelity SIP with Cisco 7940/7960

  1. What do you use for TFTP server? Do you build configs manually?


  2. Mike Waldron says:

    To answer your questions: I use this TFTP server

    And yes those configs were built by hand.

  3. Paul says:

    I assume the phone is not fully configurable via a GUI and you have to paste the above with correct credentials in a file on the TFPT server. I know how to select a TFTP server from the phone config but what file name do you use for the configuration you have created on the TFTP server?



  4. The idea is to avoid using TFTP server at all. Some older SIP versions of Cisco 7940/7960 allow you to configure lines from the phone menu. So, you just connect the phone to your home network, configure line to register to your SIP provider (in most cases you need IP address and credentials), and that’s it.

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