Purpose
This guide provides a quick‑start process for initiating:
Port orders (moving numbers to CallTower), or
New number orders (DIDs or Toll‑Free numbers)
The goal is to ensure requests are:
Sent to the correct inbox
Submitted with complete and accurate information
Not delayed due to intake or routing errors
This guide covers how to start the request correctly.
Who Should Use This Guide
This guide is intended for:
Active (post‑implementation) customers
Customers currently in implementation
Internal teams assisting with number intake and routing
Start Here: Customer Status Matters
Before initiating a request, determine the customer’s status.
Customers Post‑Implementation
May port numbers or order new numbers
Requests are submitted using templates and email
Customers In Implementation
Must continue sending port and DID requests directly to their assigned IPM
Do not email Numbers@calltower.com or Support@calltower.com
Porting Numbers to CallTower
(Active / Post‑Implementation Customers)
Step 1: Complete the Porting Template
Include the following information:
Numbers &
DIDs to port: 10‑digit format only (no spaces)
CNAM: Maximum 15 characters (including spaces, no special characters)
Location Details
Location Name
Location Address (required for new locations)
Product
CT Cloud SIP
Global SIP
Teams OC
Teams DR
Webex CCP
Cisco
Other applicable product
Additional Information (if applicable)
IP routing
Existing trunks
“Build Like” number
SMS requirements
Requested Port Timing
Requested Port Date: MM/DD/YY (Monday–Friday only)
Requested Port Time:
Monday–Thursday: 8:00am–5:00pm ET
Friday: 8:00am–2:00pm ET
Required Documents & Additional Information
✅ LOA (Letter of Authorization)
✅ Most recent invoice or CSR (Customer Service Record) from the current carrier
Non‑US Ports
Additional documentation may be required, such as:
In‑country LOA
Proof of identity
Business registration documents
Port time cannot be selected for international ports; timing is set by country
Step 2: Email CallTower
Send your completed request to the correct inbox:
New locations:
→ Support@calltower.comExisting locations:
→ Numbers@calltower.com
Include:
Completed porting template
All required documents
The LNP Team will advise if additional information is required.
This email thread will be the primary communication method throughout the life of the port order.
Ordering New Numbers from CallTower
Step 1: Complete the New Number Template
Include the following:
Number Details
City / State / Country
Desired NPA / NXX
Quantity requested
Consecutive numbers: Yes or No
(A $50 fee applies for consecutive Global orders)
CNAM
Maximum 15 characters (including spaces, no special characters)
Location Details
Location Name
Location Address (required for new locations)
Product
CT Cloud SIP
Global SIP
Teams OC
Teams DR
WebEX CCP
Cisco
Other applicable product
Additional Information
Build‑like number
Area code preference
Other relevant notes
Step 2: Email CallTower
Send your completed request to:
New locations:
→ Support@calltower.comExisting locations:
→ Numbers@calltower.com
Include:
Completed new number template
Any required supporting documentation
The LNP Team will advise if additional information is required.
This email thread will be the primary communication method throughout the life of the order.
Important Notes & Common Pitfalls
Do not combine new number orders and port requests in the same submission
Ensure templates are fully completed before emailing
Requests missing required details or documents may be delayed
Always verify whether a new location is required before submitting
Final Note
Starting with the correct template, inbox, and customer status is the fastest way to ensure your number request is processed efficiently. Accurate intake prevents rework, delays, and unnecessary back‑and‑forth.