Cytracom UCaaS: SIP port documentation


This article discusses how to change the SIP port when troubleshooting Cytracom UCaaS issues.


  • Cytracom UCaaS


In certain cases, you will need to change the SIP port for issues regarding SIP communications.

When to consider changing the SIP port

SIP port issue symptoms may include:

  • One-way audio
  • BLF-related issues
  • Call termination issues
  • Your ISP being unable to disable the SIP ALG, bridge, or otherwise.

Symptoms that will likely not be resolved by changing the SIP port include Call quality, such as: crackly audio or audio delay. This is typically caused by jitter or packet loss upstream from the phone (Phone to wall, wall to switch, switch to firewall, firewall to modem, modem to ISP, ISP to Cytracom

Changing the SIP port

You can change the SIP port by either logging into the Partner Portal and programming the p-value, or remotely accessing the phone’s web UI and manually adjusting the setting.
Programing the SIP port from the phone's web UI.

Important considerations

  • Possible SIP ports are UDP 5060, UDP 5062, TCP 5060, and TCP 5061.
  • It is always better to adjust the bridge and any ISP equipment to your firewall, set best practices for QoS, ACL, SIP ALG, etc. found at, and ensure that the quality of the lines is performing adequately.

Programming from the phone 's web UI

Navigate to the web UI

1. Open a web browser and enter the phone's IP address into the address bar. 

2. Enter the admin username and password. The password is located on the bottom of the D2 phone. If necessary, you can reset the password on the Devices page of the Cytracom Partner Portal. 

Change the SIP protocol

1. In the web UI, navigate to the Accounts page.

2. Select the account (If you only have one extension programmed to the phone, choose Account 1, then click  SIP Settings.

3. Choose your desired SIP Transport protocol UDP or TCP), then click Save and Apply.

Changing the SIP port

1. In the web UI navigate to the Accounts page.

2. Select the account (If you only have one extension programmed to the phone, choose Account 1), then click  General Settings.

3. Set the primary SIP server.

  • 5060:, Accepted on UDP/TCP
  • 5062:
  • 5062. accepted on UDP/TCP
  • 5061:
  • 5061 accepted on UDP

3. Set the secondary SIP server

  • 5060:, accepted on UDP/TCP
  • 5062:, accepted on UDP/TCP
  • 5061:, accepted on UDP

4. Set the BLF server: Examples; 5060:, 5062: (Note: The BLF Server only accepts traffic over 5060(udp/tcp) and 5062(udp/tcp))

5. Press Save and Apply.

Programming from the web portal

Edit the p-values

1. Navigate to and log in with your email and password.

2. Go to PBX or, if in Glass, navigate to Manage CustomersModify PBX for the desired customer.


3. Go to Devices or Device Templates.


4. Click the desired Device or Device Template to bring up the Edit Device page, then click the Show Advanced button.


5. Enter the  p-values:

P-value Settings
P130 0 for UDP; 1 for TCP
P2329 1 for UDP; 0 for TCP
  • 5060:, Accepted on UDP/TCP
  • 5062:
  • 5062 accepted on UDP/TCP
  • 5061:
  • 5061: accepted on UDP
  • 5060 accepted on UDP/TCP
  • 5061 accepted on UDP
  • 5062(Accepted on UDP/TCP
  • 5060: on UDP/TCP
  • 5062:
  • 5062(Accepted on UDP/TCP
  • 5061:
  • 5061(Accepted on udp)
  • 5060:
  • 5062:

Note: The BLF Server only accepts traffic over 5060(udp/tcp)

When finished, click Save.

Send a provision request to the phone to accept changes

1. Click the Extensions tab.


2, Edit the extension, then click the green status circle.


3. Click Provision Device(s), then wait five minutes for provisioning to  take effect.


4. Log into the Web UI with your set password.

** Delays will not be solved by changing the port unless it is caused by packet de-prioritization, DPI, or IPS settings specific to the given port.

Additional Resources

Still have questions? Click here to learn how to contact Cytracom Technical Support.

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