Meyerj66,
Thanks for getting us your configuration. Does your unit show SIP proxy users when you issue the "show sip proxy user" command? If not, we may not be configured for the correct SIP proxy mode. Below are the mode descriptions and the corresponding SIP proxy configuration. The configuration samples omit basic interface, firewall settings, etc. for the sake of brevity. More complete examples can be found in Configuring SIP Proxy in AOS.
Transparent Proxy Mode
The Transparent Proxy mode is best for new installations when the phone does not need to be aware of the
device presence (transparency). In this mode, the softswitch is configured as the server and the registrar
(and Outbound Proxy when required). The phones are not aware of the AOS device, and phones are not
required to use the same softswitch. Requests sent from the phones are routed to the destination IP address
of the softswitch, and the AOS device does not require configuration to be aware of the softswitch. In
Transparent Proxy mode, the softswitch address configured in the phone is the external softswitch, and SIP
signaling is sent to the Layer 3 destination address of the external softswitch.
Transparent Proxy Mode Basic Configuration
ip sip
ip sip proxy
ip sip proxy transparent
Stateful Proxy Mode
The Stateful Proxy mode is best suited for existing installations due to the ease of converting from B2BUA
to IP phones without modifying the phone configurations. In this mode, phones or user agents (UAs) rely
on the SIP server to act as the proxy, and the configuration is very similar to the existing B2BUA. The
AOS product takes on the role of proxy. The UA is not aware of other SIP servers on the network in this
mode. Each phone is configured to register to the proxy, and the phone is not aware of the softswitch(es).
Either the softswitch(es) host name(s) or IP address(es) must be programmed in the system, enabling
communication between the two. All phones must use the same softswitch or set of softswitches, and the
phone must send all requests to the destination IP address of the AOS device. In Stateful Proxy mode, the
softswitch address configured in the phone is the proxy (AOS device), and SIP signaling is sent to the
Layer 3 destination address of the proxy (AOS device).
Stateful Proxy Mode Basic Configuration
ip sip
ip sip proxy
ip sip proxy sip-server primary <IP Address>
Outbound Proxy Mode
In the Outbound Proxy mode, the ADTRAN device’s duties may include numerous functions, such as
establishing the service provider's boundaries, receiving and sending Voice over Internet Protocol (VoIP)
traffic behind a firewall, controlling network call routing, and network quality of service (QoS). The
system may not require configuration to be aware of the softswitch. The softswitch (which can be B2BUA
or Stateful Proxy) takes on the role as the server and registrar in this mode. Requests sent from the phones
are routed to the destination IP address of the softswitch. The lack of configuration is usually not an issue
because the SIP messages contain the necessary routing information. The softswitch address configured in
the phone is the external softswitch, and SIP signaling is sent to the Layer 3 destination address of the
proxy.
Outbound Proxy Mode Basic Configuration
ip sip
ip sip proxy
Your configuration most closely matches Outbound Proxy mode. However, this is used rarely and requires that phone insert the softswitch IP address in the SIP message headers, but that the layer 3 destination IP address be the Adtran unit. If the output of "show sip proxy user" has an entry for each of your phones and you feel confident you are configured for the proper mode, we will likely need you to open a regular Technical Support ticket by calling 888-423-8726 or sending an email to support@adtran.com so that we can troubleshoot directly on the unit.
Thanks!
David
