# API for CTI integration with IP Call Center solution **URL:** \ **Category:** APIs & Integrations\ **Tags:** developer-tools\ **Created:** [March 4, 2020, 2:41pm UTC](https://community.hubspot.com/t/api-for-cti-integration-with-ip-call-center-solution/19205 "2020-03-04T14:41:13Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![goran77](https://d10pqhm3lwygmk.cloudfront.net/user_avatar/community.hubspot.com/goran77/32/22074_2.png) [@goran77](https://community.hubspot.com/u/goran77)\ **Post date:** [March 4, 2020, 2:41pm UTC](https://community.hubspot.com/t/api-for-cti-integration-with-ip-call-center-solution/19205/1 "2020-03-04T14:41:13Z")
Hi, we are looking for API CTI integration to connect our SIP based Call Center solution to Hubspot CRM. We need at minimum basic funcionalities as: contact popup on incoming call, click to dial, call logging and similar. We already have our phones and PBX. When we receive a call on it, we would like to call Hubspot API to have a POPUP with a contact in Hubspot. Also we would like to be able to click to dial from Hubspot to somehow make a call with our PBX, call API to log a call… Is this possible with provided API? Thank you ---
**Author:** ![WendyGoh](https://d10pqhm3lwygmk.cloudfront.net/user_avatar/community.hubspot.com/wendygoh/32/42320_2.png) [@WendyGoh](https://community.hubspot.com/u/WendyGoh)\ **Post date:** [March 5, 2020, 7:49am UTC](https://community.hubspot.com/t/api-for-cti-integration-with-ip-call-center-solution/19205/2 "2020-03-05T07:49:19Z")
Hey @goran77, Definitely! You can check out our calling extensions SDK documentation here: [CRM API | Calling extensions SDK](http:// [Calling extensions SDK - HubSpot docs](https://developers.hubspot.com/docs/api/crm/extensions/calling-sdk)) and here’s the [SDK GitHub repository](https://github.com/HubSpot/calling-extensions-sdk). Let me know if you’ve any other questions on this. ---
**Author:** ![goran77](https://d10pqhm3lwygmk.cloudfront.net/user_avatar/community.hubspot.com/goran77/32/22074_2.png) [@goran77](https://community.hubspot.com/u/goran77)\ **Post date:** [March 5, 2020, 8:08am UTC](https://community.hubspot.com/t/api-for-cti-integration-with-ip-call-center-solution/19205/3 "2020-03-05T08:08:05Z")
This looks perfect! Thanks ---
**Author:** ![TimSeabrook](https://d10pqhm3lwygmk.cloudfront.net/user_avatar/community.hubspot.com/timseabrook/32/14727_2.png) [@TimSeabrook](https://community.hubspot.com/u/TimSeabrook)\ **Post date:** [July 21, 2021, 3:36am UTC](https://community.hubspot.com/t/api-for-cti-integration-with-ip-call-center-solution/19205/4 "2021-07-21T03:36:29Z")
Hi @WendyGoh , We are trying to do the same as @goran77 however the Calling Extensions SDK documentation states that it only relates to outbound calls. How can we screenpop a HubSpot screen based on the Calling Line ID (CLID) of an incoming call? thanks, Tim ---
**Author:** ![zaklein](https://d10pqhm3lwygmk.cloudfront.net/user_avatar/community.hubspot.com/zaklein/32/44431_2.png) [@zaklein](https://community.hubspot.com/u/zaklein)\ **Post date:** [June 30, 2021, 1:00pm UTC](https://community.hubspot.com/t/api-for-cti-integration-with-ip-call-center-solution/19205/5 "2021-06-30T13:00:01Z")
Hi @WendyGoh Just thought I’d let you know a link needs to be updated in your response. The Calling Extensions SDK doc can now be found here: [Calling extensions SDK - HubSpot docs](https://developers.hubspot.com/docs/api/crm/extensions/calling-sdk) All the best, Zach ---
**Author:** ![dennisedson](https://d10pqhm3lwygmk.cloudfront.net/user_avatar/community.hubspot.com/dennisedson/32/28044_2.png) [@dennisedson](https://community.hubspot.com/u/dennisedson)\ **Post date:** [June 30, 2021, 2:54pm UTC](https://community.hubspot.com/t/api-for-cti-integration-with-ip-call-center-solution/19205/6 "2021-06-30T14:54:11Z")
@zaklein good catch! Updated 😀