Cortelco 2757 - Manual (Page 25)

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2.6 SIP Server Information Setup (Web Configuration)
The web interface can also be used to enter SIP information. This is the only way to enter multiple
SIP usernames and passwords.
Please refer to Section 2.4.2 to access the web interface. Then follow these instructions.
1. Click ‘SIP’ link on the left.
2. You can enter the SIP proxy server’s IP address and port here. Also, you can enter up to 4
sets of SIP phone number, username, and password.
3. After all the information has been entered, click ‘Submit’ to store it, or click ‘Cancel’ to discard.