Yes. Following is the complete set of codes, from the Cisco 186 and 188 Administrator's Guide, which you can download, in PDF format,
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| Build information | 123123 | Build date of the Cisco ATA software |
| Review IP address | 21 | Returns IP address of the Cisco ATA |
| Review MAC address | 24 | Returns media access control (MAC) address of the Cisco ATA |
| Review network route IP address | 22 | Returns IP address of the network route |
| Review subnet mask | 23 | Returns subnet mask of the network route |
| Version number | 123 | Returns version number of the Cisco ATA software |
| Alternate NTP IP address | 78 | IP address of the alternate NTP server |
| Audio mode | 312 | Allows finer control of the audio component to suit certain user applications |
| Call features | 314 | Subscribed features statically enabled by the user |
| Caller ID method | 316 | Specifies the signal format when generating the Caller ID format to use |
| TFTP Configuration Interval | 80002 | Interval (in seconds) between configuration updates when TFTP configuration is used |
| Connection mode | 311 | Controls the connection mode of the call signaling protocol |
| Dynamic Host Configuration Protocol(DHCP) | 20 | Controls whether the Cisco ATA can automatically obtain configuration parameters from a server over the network |
| DNS 1 IP | 916 | IP address of the primary DNS server |
| DNS 2 IP | 917 | IP address of the secondary DNS server |
| Encrypt key | 320 | Encrypts the configuration file on the TFTP server |
| Gatekeeper/proxy server IP address | 5 | H.323 gatekeeper IP address |
| H.323 protocol | 38 | Selects the signaling protocol |
| IP address | 1 | IP address of the Cisco ATA |
| LBR codec | 300 | Low bit rate codec selection |
| Login ID 0 | 46 | Alternate user ID used for authentication |
| Login ID 1 | 47 | Alternate user ID used for authentication |
| Media port | 202 | Specifies which base port the Cisco ATA uses to receive RTP media streams |
| Network route address | 2 | Network router address |
| NPrintf address | 81 | IP address of a host to which all Cisco ATA debug messages are sent |
| NTP server address | 141 | IP address of the NTP server |
| Num Tx frames | 35 | Number of frames transmitted per packet |
| Paid features | 315 | Features subscribed to by the user |
| Polarity | 304 | Controls connect and disconnect polarity |
| PWD 0 | 4 | Password associated with the primary phone line (UID0 or LoginID0) |
| PWD 1 | 14 | Password associated with the secondary phone line (UID1 or LoginID1) |
| Rx codec | 36 | Selects the audio codec type to use to decode received dATA. The call-receiving station automatically adjusts to the call-initiating station's audio codec type if the call-receiving station supports that audio codec. |
| Set password | 7387277 | Configuration interface password |
| Signal timers | 318 | Timeout values controlling the starting or stopping of a signaling event |
| H.323 max number of redirects | 205 | Maximum number of redirections the Cisco ATA will attempt to reach a callee when making a call |
| Subnet mask | 10 | Specifies the subnet mask for the Cisco ATA |
| TFTP URL | 905 | IP address of the TFTP server when TFTP configuration is used |
| Timezone | 302 | Specifies offset to GMT�used to time-stamp incoming calls for caller ID |
| ToConfig | 80001 | Identifies unconfigured or already-configured Cisco ATAs |
| Trace Fflags | 313 | Enables logging of debug information |
| Tx Codec | 37 | Selects transmitting audio codec preference |
| UDP TOS bits | 255 | Determines the precedence and delay of UDP IP packets |
| UID 0 | 3 | User ID (telephone number) for the PHONE 1 port |
| UID 1 | 13 | User ID (telephone number) for the PHONE 2 port |
| Use login ID | 93 | Determines which pair (UIDx, PWDx or LoginIDx, PWDx) to use for authentication |
| Use TFTP | 305 | Enables TFTP as configuration method |
| Upgrade software | 100 | Used in the software process to enter the IP address of the PC |
| Upgrade language to English | 101 | When upgrading software, changes or upgrades the voice prompt language to English |
Similar Threads for: Are there other codes I can use to learn things about and use on my ATA 186 and 188? 
Are there other codes I can use to learn things about and use on my ATA 186 and 188?
Linear Mode
