Network Devices with Potential Compatibility Issues for VoIP Services

RV016/042/082/130/220

RV180 - Configuration

RV325 - Configuration

Symptom: Misrouting calls, call drops, device registration issues. Specific to Poly phones.

Solution: Disable SIP ALG if using Cisco phones.

Replace with a known good device if using Poly phones for RV016/042/082/220

**Devices work fine with Cisco phones. 

Untested on Yealink.

Symptom: Call drops, call misrouting, one way audio, device registration issues.

Solution: Configure per recommended guidelines.

**Some firmware revisions will revert all VoIP settings to defaults.

 Symptom: One way audio, dropped calls, general call quality issues.

Solution: Replace with a known good device. Device has no way to disable SIP ALG.

Symptom: Call Drops, one way audio, device registration issues, potential misrouting, general call quality issues.

Solution: Bridge device and use a stand-alone router to handle all traffic on the LAN.

Symptom: Dropped calls, misrouting, device connectivity issues. This is due to the NAT process and has no way to be resolved if there are multiple phones on the network.

Solution: If more than one phone is in use local SIP ports can be set on the devices to mitigate issues. If issues persist the router will need to be replaced.

Symptom: Dropped calls, one way audio, device connectivity issues.

Solution: Device does not require specific settings to allow VoIP service, but a secondary device providing NAT or DHCP services will break the NAT process on the Meraki. For VoIP phones this will cause multiple issues.

Yes

Symptom: dropped calls, device connectivity, misrouting.

Solution: Configure per recommended guidelines.

Some firmware revisions are not compatible with 8x8 service

Symptom: Dropped calls, device connectivity issues, one way audio.

Solution: Devices lack compatible VoIP settings. Device will need to be replaced, or used in AP mode with another router. 

All

Firmware below 8.0

Firmware 8.0+

Symptom: Dropped calls, device registration issues, one way audio.

Solution: Configure per recommended guidelines.

Symptom: Call Misrouting, Call drops, Call transfers failing, Device connectivity and registration issues, NTP issues 

Solution: Configure per 8x8 guidelines. Device requires SIP Modules (SIP ALG) to be enabled for VoIP traffic. 

Tested on Firmware 17.1.3

Symptoms: Dropped calls, one way audio, garbled/choppy audio, device connectivity issues.

Solution: Configure per recommended guidelines. Some settings are firmware dependent, and some firmware is not compatible with VoIP service.

Symptom: Unable to call 1800 number or specific area codes, dropped calls, one way audio.

Solution: Disable SIP ALG on the Ubee.

**Any firmware updates from the ISP will revert these settings changes.

Unifi

Edgerouter

Yes

Symptom: Dropped calls, one way audio, misrouting, device registration issues.

Solution:

Edgerouter Configuration

Unifi Configuration

Symptom: Dropped calls, one way audio.

Solution: Configure per recommended guidelines.

Yes 

Symptom: Dropped calls, device registration errors, potential misrouting, one way audio

Solution: Device requires specific configuration to work. 

Symptom: Dropped calls, one way audio.

Solution: Poly phones require SIP ALG to be enabled. This will cause Cisco phones to go offline or experience call quality issues.

Cisco Phones require SIP ALG to be disabled, this will cause Poly phones to go offline or experience call quality issues.

If there are a mix of phones on the network, the firewall will need to be replaced.