After more searches and after getting comments about more CTI Companies,

[With the price hike in Dialogic, many of my clients have been asking me about alternatives. I have also started searching for some alternatives of Dialogic. I will be building a list and comparative article on them. Kindly send me any company.]

Here is another company I am looking at
TelcoBridges :

TelcoBridges is an innovative provider of enabling communications technologies for telecom system integrators, solution providers, and telecom equipment manufacturers worldwide.

TelcoBridges’ hardware and software products support VoIP, TDM, and IVR technologies enabling the rapid development of carrier-grade telecom systems.

Founded in 2002, TelcoBridges and its customers have deployed systems in more than 30 countries for some of the world’s largest telecom operators.

Technology
Supporting the most widely accepted industry standards and protocols, our technology is integrated by our system integration partners to build the industry’s most cost-effective, high-performance telecommunications systems marketed to fixed, mobile, and IP-based telecom operators.

Architecture
TelcoBridges delivers scalability, high-availability and unmatched redundancy into the design of carrier-grade telecom solutions by its solution partners.

Platform
Using our development tools our customers minimize development costs and reduce their development cycle, bringing innovative telecom solutions to market in record time.

Headquarters
Headquartered in Montreal, Canada, where TelcoBridges performs its R&D and production activities, the company has further sales representation and technical support staff in three regional offices: USA (San Jose, CA), China (Hong Kong), and Korea (Seoul).