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ZIP2x2 User’s Manual
The phone retains this display for three seconds before returning to whatever was displayed prior
to your initiating the call (usually the idle display). If you had selected a call appearance, it will
become idle after five seconds.
6.2.8 Making a Call Without a SIP Proxy
The ZIP2x2 and ZIP2x1 phones are intended for use with a telephone system but it is possible to
use it without one. You might do this if you have two phones either directly connected or isolated
on a network. To make the call, you must know the IP address of the phone you want to call or
the other device must have an FQDN that your phone can resolve with a DNS server.
To make a call directly to the other device, ensure that:
• your phone has a unique IP address
• your phone has not registered with a SIP registrar
• you know the IP address and device ID of the phone you want to contact
The following instructions contain many steps, some of which may not be applicable depending
on the configuration of the phone:
1. Log into the phone using the password as described in section 8.5.1 on page 103.
2. Disable DHCP, set a static IP address, subnet mask and default gateway, as described in
section 8.5.2 on page 105.
1
3. Remove the address of the TFTP server and the address of the SIP outbound proxy, as
described in section 8.5.2 on page 105.
4. Assign a unique device ID to the phone and remove the domain name, as described in
section 8.5.5 on page 115.
5. Repeat these steps for the other phone.
6. Connect the phones so that they can be accessed over the LAN.
7. Create a call from one phone to the other using the method outlined in section 6.2.5 on page
49, but address the other phone by its device ID and IP address:
For example, if the two phones have device IDs of East and West, you might make a call from
East to West by typing:
1. It is not a requirement that the phones have a static IP address. However, if you use DHCP, the phone may receive a
new IP address after its lease expires. You will have to find out this new IP address before you can make a call to that
phone.
1. Call F:abc
<device ID>@<IP
address>
1. Call F:abc
West@10.1.13.17
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