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A parameter often forgotten is the DTMF capability of an ATA on an SRG-50. To turn this capability on:

In Nortel Element Manager:

* Click Telephony-Sets-Active Sets
* Go to the "Capabilities and Preferences" tab
* Look up the DN you want to configure
* At the bottom, on the "Capabilities" tab, make sure that "Receive short tones" is checked

On NRS:
Click "Configuration"
Click "Set standby view"
Gateway endpoints
Click Show
Click "# routing entries" (number after "site")
Click "Show"
Click Add
Enter: Private level 0 regional (CDP steering code) - DN - Routing Cost 1
Click Save

Click Tools
Click Database actions
Choose Cut over&Commit, Click Submit. Notification: Command Succesful

On CS1K
>ld 87
ESN000

MEM AVAIL: (U/P): 97451031 USED U P: 6058398 742984 TOT: 104252413
DISK SPACE NEEDED: 1496 KBYTES
REQ prt
CUST 0
FEAT cdp
TYPE dsc
DSC 50149
DSC 50149

On the tab Capabilities & Preferences, tab IP Terminal Details, click Deregister DN

The patchpanel on the back of an SRG contains, besides the digital ports for ATA2s, 4 ports for analog sets. By default they get the name NOTUSED. If you have the latest firmware however, you can use them:

AS1 = 98113 = Port 0413
AS2 = 98114 = Port 0414
AS3 = 98115 = Port 0415
AS4 = 98116 = Port 0416