SIP Trunking for the Enterprise

Certified Solutions for Local-to-Global Voice Applications


Overview

Enterprises with premise-based IP PBX telephony and Unified Communications (UC) solutions deploy SIP trunking to achieve scalability, flexibility, disaster recovery, and cost savings.

Key Benefits of SIP Trunking:

  • Replaces multiple vendors and legacy voice technologies.
  • Provides scalability, flexibility, and disaster recovery.
  • Reduces costs with IP communications.

CallTower’s SIP Trunking Features:

  • Standard trunk features with reliability and redundancy via a multi-carrier MPLS network.
  • Business continuity and disaster recovery with powerful call management features.
  • Fully managed service via CallTower’s MPLS network, third-party MPLS, or public Internet.
  • Enhanced features like enterprise-wide calling plans, QoS management, and worldwide local numbers.

Features

  1. Global Local Coverage and Compliance:
    • Local DID numbers and voice services in over 70+ countries.
    • Compliant in-country dial plans for seamless user experience.
  2. Complete Service Features:
    • Local, long distance, on-net, toll-free, directory assistance, caller ID, directory listing, and 911/E911 services.
  3. Network Flexibility:
    • Options for capacity, geographic diversity, and redundancy.
    • Service delivery over new or existing Internet, CallTower MPLS, or other MPLS networks.
  4. Web-Based Service Management:
    • Real-time call detail, utilization reports, and ticket tracking.

Benefits

  • Reduced Costs: Consolidate local lines and trunks, reduce hardware and trunk costs, and eliminate multiple vendors.
  • Improved Continuity: Avoid outages with network and geographic redundancy and contingency routing.
  • Investment Protection: Reuse legacy PBX trunk cards or use IP-PBX native SIP trunk connectivity.
  • Improved Scalability: Add capacity for growth or new locations seamlessly.
  • Single Vendor Solution: Simplify global voice and network services with one provider.

Certified Integration

CallTower supports standards-based solutions and ensures interoperability with leading IP-PBX manufacturers for rapid deployment, reduced costs, and simplified administration.


Legacy PBX Integration

What if your phone system is not SIP-capable?
CallTower can connect traditional phone systems using copper lines or ISDN PRI to SIP Trunking with an Integrated Access Device.


Global Availability

CallTower offers:

  • Local numbers (DID/DDI), portability (LNP), and toll-free services in over 100 countries and 8,000 cities worldwide.
  • Consolidated services, reduced costs, and simplified expansion with a single-vendor solution.
SIP Trunking for the Enterprise
SIP Trunking for the Enterprise

SIP Trunking for the Enterprise