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Does anyone know of a SIP client that can open a web page to a configurable URL when someone calls? We have a web-based database, and I'd like to search by phone number whenever we get an incoming call, and have the person on screen before I answer it.

The SIP client program doesn't have to have any other audio or calling features - we all have hardware SIP phones on our desks as well.

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Maybe create a desktop shortcut/hotkey for the database instead? Personally, I prefer something that's predictable over something the computer can screw up on. – digitxp Aug 31 '10 at 15:30
rjmunro, did you ever get an answer to this problem? I am looking for something identical - a softphone client that loads a URL to go along with hardware phones. – Christopher Padfield Oct 19 '11 at 12:30
@ChristopherPadfield I never did get a solution to this problem. I'm now working somewhere else, where it would be less useful, but am still interested. – rjmunro Oct 19 '11 at 16:06

I doubt that you're still looking for an answer to this 6 months later, but here goes:

The Twinkle SIP client supports executing a script when an incoming call is received and I'm sure many others do as well. To get something like this working in Twinkle, you'd write a script like the one below, then go into Edit->User Profile->Scripts and select /path/to/my/script for "Incoming Call".

#!/usr/bin/env python
import os
import re

def get_caller_id(from_hdr):
    clid, uri = from_hdr.split(" <sip")
    clid = re.sub("\"", "", clid)
    # Insert ASCII code for spaces
    if"\s", clid):
        clid = re.sub("\s", "%20", clid)
    return clid

if "SIP_FROM" in os.environ:
    from_hdr = os.environ["SIP_FROM"]
    if re.match("\"[A-Za-z0-9\s]+\"", from_hdr):
        cmd = "firefox "
        url = ""
        caller_id = get_caller_id(from_hdr)
        cmd_string = cmd + url + caller_id

        # Launch Browser
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I am still looking for an answer, and that looks nice, but none of our clients use Linux, which Twinkle seems to require – rjmunro Mar 14 '11 at 22:39

I found does this. Options -> External Application and then run a .bat file with something like:

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Nowadays you should use WebRTC from web.

This can be easily done with the siplml5 or JsSIP open source WebRTC clients.

Or if you wish a ready to use solution you might try the mizu webphone which has a setting for this, so you just have to enter your URL to be called on incoming calls.

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I don't think you have understood what I needed. I wanted something that can sit in the task bar, logged into my SIP account. When a call comes in, I want it to open a URL in a new window with the caller ID added, e.g., which my database will use to look up the person who is calling. – rjmunro Jan 19 at 9:51

Recently I've added options to automatically open URL on incoming call or on accepting incoming call to tSIP (Settings/Contacts, HTTP query, e.g.[number] where "[number]" would be replaced with number from current or last incoming call). Previously it was available only as manual action and personally I would prefer it that way. All function keys are configurable (BLF/speed dial/DTMF/etc., similar to desk phones). After configuring "HTTP query" button, global shortcut (e.g. Ctrl + Browser Forward key combination that most likely would be unused) can be assigned to it making it relatively effortless to open page if softphone sits it tray (action for shortcut = "button #", ID = button ID as visible when editing button).

I don't know how call queue works with your PABX (sequential or all-at-once ringing), but opening pages automatically may result with lots of pages opened unnecessary (or be very disturbing if agents are making notes after the call) and I think in many cases agents may know that particular call should be left to be answered by their peers.

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