How can the channel capacity for a T1 VoIP system be increased from the default of 384 channels to 480 channels?
The default maximum channel capacity for a T1 VoIP system is 384 (24 channels per trunk, with a maximum of 16 trunks).
The limit only applies when connecting Blueworx Voice Response to a traditional telephone network. When configured to use a VoIP connection with DTNAs, there is no physical reason for this limit. It is, therefore, possible to configure Blueworx Voice Response as an E1 system when in a traditional T1 environment to enable an increase in capacity to 480 channels (30 channels per trunk, with a maximum of 16 trunks).
- This change will only work if the Blueworx Voice Response system is a VoIP only configuration. If there are any physical adapters, DTXA or DTTA, the change cannot be made.
- If any state table applications use uncompressed voice segments, this change will not work as the audio is stored in mu-law for T1, and so will play in the wrong format for an E1 system.
To configure Blueworx Voice Response in this way, the Country / Region section of Pack Configuration needs to be set to Other E1. To do this, perform the following steps:
- Start Blueworx Voice Response.
- In the Blueworx Voice Response Welcome window, select Configuration -> Pack Configuration -> Change.
- Select the Country / Region button and choose Other E1 as the country, press OK and then OK again to confirm the choice.
- Configure the packs and channels, as usual, save the changes and restart Blueworx Voice Response.
If the Blueworx Voice Response system has been used as a T1 system previously and is running VoiceXML applications, it will also be necessary to delete the VXML2 audio cache before taking new calls. To do this, perform the following steps:
- Stop VRBE if it is running (dtjstop followed by dtjshost -exit).
- As dtuser, cd into $CUR_DIR/voice/ext/v2c and delete all directories and files within that directory.
- Restart VRBE (dtjshost followed by dtjstart).